How Does An Electric Motor Work Physics

The idea is to have the motor run a cable looped on pullies with a flag attached in the middle. “Work” is a difficult concept to precisely define, especially for students unfamiliar with basic physics. Let's take a closer look at generators and find out how they actually work. Electrons have weak magnetic properties, but these usually cancel each other out. A simple motor has six parts:Armature or rotor, Commutator, Brushes, Axle, Field magnet, DC power supply of some sort. An electrical current reaches the motor and then enters coils of wire that are wrapped around a metal base. In electric railways, the electricity generated is fed back into the supply system. Current is simply a bunch of moving. Watch the best videos and ask and answer questions in 97 topics and 23 chapters in Physics. If you take the electric motor out of a toy car and run it by itself, it doesn’t cease to be a motor either. How does this simple DC Motor work? Ask Question. I'll do that in a second. Because it runs on electricity, the vehicle emits no exhaust from a tailpipe and does not contain the typical liquid fuel components, such as a fuel pump, fuel line, or fuel tank. An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. These very motors can be, and are, used to generate electricity (through the process of regenerative braking ) for charging these vehicles' onboard batteries. More about the Electric Motor The principle used in motors is another aspect of the principle of induction. How long does it take a 2. Hyperloop One, now called Virgin Hyperloop One after investment from Richard Branson's company in late-2017, created a video (below) to explain how its system works. Electric motors are used in all sorts of applications. These are cut-aways of actual DC motors, showing the field windings, commutator and the armature. Work Done by a Spring Force. asked by Jacie on January 6, 2011; physics. Synchronous Motor. This force works both ways - a moving magnetic field creates electric current. 6 × 10 × 1 = 6 J. The wire should be enamel coated magnet wire. World's smallest electric motor made from a single molecule. If you know the potential energy for only some of the forces, possibly because some of them are nonconservative and do not have a potential energy, or if there are other energies that are not easily treated in terms of force and work, then the conservation of energy law in its most general form must be used. Output mechanical power of the motor could be calculated by using the following formula: P out = τ * ω. This simple electric motor works by the magnetic force F = IL x B. How often do we use this electrical machine in a day? Several times a day most likely. All of these motors work in more or less same principle. Electric Motors The defining characteristic of an electric motor is that it must be able to rotate freely through a complete circle and keep on turning. Researchers from the Georgia Institute of Technology and Northwestern University with support from the Army Research Office and the National Science. This consideration leads us to the following definition of the word power: Power is the rate of doing work (or converting energy) or : Power is the work done (or energy converted) per unit time. HSC Physics – Motors and Generators syllabus dot point summary This is a set of HSC Physics notes for each syllabus dot-point of Motors and Generators. The essence of the electric motor is an electro magnet. the largest (bildge pump) or ventilation fan pushes 250 cfm, so. So 6 times-- oh, no, that's not on an electric field. This magnetic force is produced because of the magnetic field which is due to the permanent magnet The magnetic force produces a torque which is responsible for rotating the coil. An electric generator is a device that produces electricity from mechanical energy. An electromagnetic motor is a machine that uses the magnetic forces produced by a wire with flowing electricity to power the movement of the motor. It is important to understand that a generator does not actually 'create' electrical energy. Class-VII. How does a generator work? An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output. But, you may have wondered, just how do those electric motors work? Have you ever played with magnets? If so, you are well on your way to understanding how simple electric motors work. How does a plug-in hybrid work? A hybrid car is like two cars in one: it has a conventional gasoline (petrol) engine for fast freeway driving and an electric motor for more economic, pollution-free travel (or idling). Output mechanical power of the motor could be calculated by using the following formula: P out = τ * ω. The gear design inside the servo case converts the output to a much slower rotation speed but with more torque (big force, little distance). It shares the most similarities with a traditional motor, though it is often a fraction of the size. Change in direction of magnetic field 3. An electric motor converts electrical energy into physical movement. Affiliate links: if you make a purchase using these links, I’ll receive a small compensation towards maintaining this blog, at no extra cost to you. Do you need to know this to fly electric models?. Fun Facts about Electromagnetism and Electric Motors Some electric generators can be driven by human power such as a hand crank or a bicycle to generate electricity. Motors supposed to do some work and two important values define how powerful the motor is. systems also allow both the I. So let’s breakdown perpetual motion machines and why we’ll never be able to make one. An electric motor develops 89 kW of power as it lifts a loaded elevator 15. Our electric motors and generators are able to do continuous work because we basically remove the magnetic field while we move thing back into the “starting position,” then re-engage the field so that it will do another increment of work for us. the load angle) must be always greater than 0°in order to keep the motor in motion (negative angles reverse the rotation). An electric fence is a psychological barrier rather than a physical one so the animal must be educated to respect the fence. Types of electric motors include alternating current motors and direct current (DC) motors. Electric motors (part 1) Sal shows that there will be a net torque on a loop of current in a wire. How does a battery work? Your watch, laptop, and laser-pointer are all powered by the same thing: chemistry… By Mary Bates. They work on the principle of induction where a rotating electro-magnetic field it created by applying a three-phase current at the stators electromagnets. ' and find homework help for other Physics questions at eNotes. Baby Professor showcases a collection of subjects that are educational for kids to help them learn how to do something themselves, exactly how something is done or how it came about. Compared to a battery electric vehicle, this extends the total driving range but lowers the all-electric range. Read those pages first. Adjusting the potentiometer or rheostat changes its resistance value and alters the voltage going to the motor. Fill in the boxes at the top of this page. There are many types of power -- physical, social, super, odor blocking, love-- but in this tutorial, we’ll be focusing on electric power. Electric motors, generators, alternators and loudspeakers are explained using animations and schematics. Change in direction of current flows 2. … What about compressed air motors? This gives rise to several linguistic problems. All electric motors operate on electromagnetic principles. " The process is like learning a motor skill, he points out, and the more people practice the. Create a force (Torque) 4. Answer all questions. An electric motor uses electrical energy and the use of magnets to create motion. A motor and generator perform opposite functions, but their fundamental structure is the same. The peculiar thing about mysteries is the way they turn into trifles, once you have figured out how they work. Electric motors have many uses. Most electric motors develop their mechanical torque by the interaction of conductors carrying current in a direction at right angles to a magnetic field. It is not the electric current per se, but the magnetic field it creates that generates force when an electric motor is in motion. The vehicle uses a large traction battery pack to power the electric motor and must be plugged in to a charging station or wall outlet to charge. The quantity that has to do with the rate at which a certain amount of work is done is known as the power. Download free PDF of best NCERT Solutions , Class 10, Physics, CBSE- Electricity. It produces continuously positive *mechanical* work. Charles Proteus Steinmetz (April 9, 1865 – October 26, 1923) was a German-born American mathematician and electrical engineer. By understanding how a motor works you can learn a lot about magnets, electromagnets and electricity in general. Electric motors have proven themselves to be among the greatest inventions of all time. From Wikibooks, open books for an open world < A-level Physics (Advancing Physics) and so we have an electric motor. The wire turns, and some of the electric energy is turned into kinetic energy. ) A tiny electric motor does not have much torque, but it can spin really fast (small force, big distance). How to Build a Super Simple Electric Motor Out of Stuff You Already Have Do you want to build an electric motor? You could probably find just about everything you need for a simple one around your. The controller is the brains of the operation, the gateway to the propulsion unit, often converting AC to DC power. What we have below is a motor, but you have to switch the direction of the electric current every half-rotation to keep it spinning in the same direction. There are many types of power -- physical, social, super, odor blocking, love-- but in this tutorial, we’ll be focusing on electric power. So the coil rotates. The central part of the motor is a cylinder called the armature or rotor. ) An electric current in a magnetic field will experience a force. The laws of physics mean the hydrogen economy will always be an energy sink. We will use specific names to refer to the parts of a motor:. An electric motor is an electrical machine that converts electrical energy into mechanical energy. Instead , it is ” I ” (capitol i ). Motor effect of an electric current, electric motor, loudspeaker, Fleming's left-hand rule, F = BIL gcse physics 12. Osheroff Biographical E thnically, I come from a mixed family. Motor efficiency is less than 100%, so electricity in must be greater than work out. How does it work? Well, it's been awhile since my last electromagnetism class, but the homopolar motor works because the combination of the flow of the electric current (from the battery) and the. How Does a Flywheel Work? The FESS is made up of a heavy rotating part, the flywheel, with an electric motor/generator. Remember that no energy transforming device is 100% efficient:. Some cars have electric motors to operate the windows and even the wing mirrors. What we have below is a motor, but you have to switch the direction of the electric current every half-rotation to keep it spinning in the same direction. Working of electric motor mainly depends upon the interaction of magnetic field…. An electric motor is used to lift a 0. The most common type of electric motor is the brushed dc electric motor. At the heart of both motors and generators is a wire coil in a magnetic field. The machines like generators, transformers also the motors work on the principle of electromagnetic induction. So let’s breakdown perpetual motion machines and why we’ll never be able to make one. They function exactly opposite to an electric motor. Therefore, if the voltage is increased, the current will increase provided the resistance of the circuit does not change. An alternative type of electrostatic motor is the spacecraft electrostatic ion drive thruster where forces and motion are created by electrostatically accelerating ions. Engineers develop networked self-analyzing electric motors. Each high-quality impact driver works by delivering plenty of torque. Parts of a ceiling fan The basic parts of a ceiling fan are an electric motor, capacitor, blades or paddles, metal arms, flywheel, rotor, encasement or 'motor housing,' and switch housing. Imagine the electric current flowing in a conducting wire to be like cars travelling along a motorway. So how do microwaves work then? Microwave ovens take advantage of the behavior of water molecules when subjected. The laws of physics mean the hydrogen economy will always be an energy sink. The arcing occurs because electricity is being conducted from the nonrotating part of the motor, or stator, to the armature, which is the part that spins. Change in direction of magnetic field 3. In order to translate an electrical signal into an audible sound, speakers contain an electromagnet: a metal coil which creates a magnetic field when an electric current. Do all rough work in this book. Because of the physics of electric motors, this "gearing" allows for higher torque and efficiency from the motor. Motors rarely deliver force or torque that is independent of speed and drag is a strong function of speed – turbulent drag is approximately proportional to v 2. Most electromagnetic motors are rotary, but linear types also exist. To do this, Faraday attached two wires through a sliding contact to a copper disc. With his permission I include the basic details here in case they can be of use to other students. An electric train: An electric train has a powerful motor to drive it. The no load speed,, is the maximum output speed of the motor (when no torque is applied to the output shaft). In spite of these problems, millions of dollars are being invested every year to develop electric rocket engines because in the long run they are destined to play a major roll in humankind's. And the loop looks. Help is available for your ScienceProject. Do you need to know this to fly electric models?. The gear design inside the servo case converts the output to a much slower rotation speed but with more torque (big force, little distance). There are a lot of different kinds of batteries, but they all function based on the same underlying concept. More about the Electric Motor The principle used in motors is another aspect of the principle of induction. This is the kind that you’ll find inside essentially everything that moves (or shakes) and runs on batteries. Working of electric motor mainly depends upon the interaction of magnetic field with current. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of rotation of a shaft. Get an answer for 'Explain how an electric motor works, including a discussion of the right-hand rule. The electric motor uses this principle to create torque, or rotational force. 5 minutes? 75 000 J 14. Most motors do this by using electromagnetism. Affiliate links: if you make a purchase using these links, I’ll receive a small compensation towards maintaining this blog, at no extra cost to you. In some instances, the blender motor will become too hot just like other electrical devices. How Does an Electric Motor Work? (in layman's terms) If you’re an electrical engineer, you know how an electric motor works. How Does a Flywheel Work? The FESS is made up of a heavy rotating part, the flywheel, with an electric motor/generator. The boxy part of the has a motor inside it that does the same job as your mouth. The output power of an electric motor is the product of the torque that the motor generates and the angular velocity of its output shaft. How many people have ever taken a moment out of their busy schedule to think about a door bell works. The scientific definition of work differs in some ways from its everyday meaning. While in technical school, Tesla became convinced that commutators were unnecessary on motors; and while with the power company he built a crude motor. The AC motor's rotor rotates inside the electric motor's coils and attached to the output shaft that produces torque by the rotating magnetic field. In a generator, mechanical energy is converted into electrical energy while the opposite occurs in the electric motor. So just how do we get electricity from water? Actually, hydroelectric and coal-fired power plants produce electricity in a similar way. In standard electric motors, a torque on a current-carrying loop is produced by its interaction with a magnetic field. On this page we hope you will learn what makes an electric motor spin. This Physics video explains the working of an Electric Motor. Anticipatory Set • Students have learned about electricity, electric circuits, voltage, and current. • They are familiar with how to connect circuit elements. HSC Physics – Motors and Generators syllabus dot point summary This is a set of HSC Physics notes for each syllabus dot-point of Motors and Generators. The coil is positioned between two magnetic poles; when current passes through the coil, it experiences force in opposite directions caused by the poles of the magnet, and this causes movement. This reversed principle (Faraday's law of induction) was discovered in 1831 by Michael Faraday and as a matter of fact he discovered the operating principle of electromagnetic generators. Electric outboard motor. An electric current, however, forces unpaired electrons inside a metal wire to line up, allowing them to join forces and create a coherent magnetic field. Sizes vary from fractional horsepower to several thousand horsepower used for such appli-cations as diesel-electric locomotives. How does an electric scooter work? The electric scooter works on batteries. You aren’t supposed to do your IB Physics IA on a topic that someone else has done already. A segmented copper sleeve, called a commutator, resides on the axle of a BDC motor. The electromagnet is a piece of iron or steel with wire wound around it in one direction, and it turns the drive shaft which can spin freely along one axis. To design such a mechanism, is it necessary to determine the spindle speed to select the type of motor, How does an electric motor work physics? or to select a type of motor first, and then determine the spindle speed through the design of reducer?. In this motor, the sliding electrical contact between the ends of the coil of wire and the paper clips turns off the current for half of each cycle. If you try to. There are mainly three types of electric motor. Short answer: Electric cars do work in the cold. This simple machine is actually fascinating in the way it uses a basic principle of electromagnetism to work in an innovative way. The deflecting force that a magnet exerts on a current-carrying wire is the mechanism behind the operation of most electric motors. A motor of greater size will be more powerful as the force applied to the loop of wire will be applied over a greater distance, doing more work. Once it has cooled to a safe temperature, it will work. ) What does the fan do? (The fan’s blades move air around the room. Now here are the equations we saw before, using the abbreviations. A motor does 25,000 J of work in 250 seconds. 5 kW electric motor to do 75 000 J of work? 30. Create a similar experiment with a bow and arrow. Compared to a battery electric vehicle, this extends the total driving range but lowers the all-electric range. When the switch is closed, current flows and the iron rocker arm is attracted to the electromagnet. Industrial Gear Motor Manufacturer Suppliers, China geared electric motor, gear reduction motor factory, parallel shaft gear motor in stock, Gear motor for sale, worm gear motor distributor, AC&DC Gear Motor Manufacturer, Sogears. Electric Motors The defining characteristic of an electric motor is that it must be able to rotate freely through a complete circle and keep on turning. In this invention the electric energy forces the matter to move. How does a generator work? An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output. Bottom line: battery, electric motor, electronics get the thumbs up, while the chassis assembly would have benefited if Tesla had more experience like a traditional manufacturer like GM. Keep Learning. To design such a mechanism, is it necessary to determine the spindle speed to select the type of motor, How does an electric motor work physics? or to select a type of motor first, and then determine the spindle speed through the design of reducer?. Engineers develop networked self-analyzing electric motors. Remember that DC current flows in only one direction unless there is a switch to reverse its direction. The vehicle uses a large traction battery pack to power the electric motor and must be plugged in to a charging station or wall outlet to charge. While in technical school, Tesla became convinced that commutators were unnecessary on motors; and while with the power company he built a crude motor. Let's go through an instance: What does the mixer in your house do for you? The rotating blades mash and mix things for you. The boxy part of the has a motor inside it that does the same job as your mouth. It works on the principle of the interactions between the magnetic fields of a permanent magnet and the field generated around a coil conducting electricity. Let's get a little technical when we discuss how electric motors work. Electromagnetism In previous chapter on ‘Electricity’ you have learnt about the heating effects of electric current. How does gear ratio affect Torque? Simply put, torque at work (such as at a wheel) is your motor's torque times your gear ratio. 5 m in 42 s. A minimum vehicle speed is usually set to govern the entrance of the gasoline engine. Electric motors are everywhere! In your house, almost every mechanical movement that you see around you is caused by an AC or DC electric motor. Control the speed of an electric motor in a DC series circuit by placing a potentiometer or a rheostat between the motor and the power source. Superconducting motors based on high temperature superconductors are much more efficient than conventional electric motors and can be made smaller, lighter and more economically. These are manufactured by Reliance Electric, part of Baldor Motors. If you are interested in brushless DC motors, then better go to the page about how brushless DC motors work. Charles Proteus Steinmetz (April 9, 1865 – October 26, 1923) was a German-born American mathematician and electrical engineer. The advantage of the induction or asynchronous motor is the power transfer to the rotor by means of electromagnetic induction. Torque produced by the gasoline engine generates electric energy in the generator, which is stored in the battery for use by the motor. It shares the most similarities with a traditional motor, though it is often a fraction of the size. Remove the battery from the magnet while you work, so it does not get too hot. Take the opportunity to look at some examples of the way in which electric motors are used in everyday life. Why are automobiles sometimes called "motorcars"? Many cars do have motors in them, but the device responsible for propelling them isn't a motor. What is a homopolar motor used for? In truth, they aren’t that practical at all. • Electricity and magnetism are closely related. The mechanics of how do magnets work really breaks right down to the atomic level. Make an Electric Motor: IntroductionThis electric motor is made in reference and inspired by Roobert33's "How to make an electric motor homemade" YouTube video. PHYS 401 Physics of Ham Radio 27 Basic Electrical Principles • Conductors - keep loose grip on their electrons and allow electrons to move freely. So just how do we get electricity from water? Actually, hydroelectric and coal-fired power plants produce electricity in a similar way. A simple motor has six parts: Armature or rotor. This month, I've decided to go back to basics and describe how the motor actually works. " The process is like learning a motor skill, he points out, and the more people practice the. There are other electric components involved, but these are the main parts needed to make a ceiling fan do its magic. If the motor doesn’t begin to spin, try flipping the magnet so the other side is touching the battery. Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Learn how magnetic forces acting on current-carrying wires can be used to drive an electric motor using our interactive simulation. A motor works when an electric current passes through a wire in a magnetic field. How does an electric bell work? An electric bell contains an electromagnet, consisting of coils of insulated wire wound round iron rods. 9 x 103 J 11. The amount of actual work is the same, just more useful. Physics History. A power mower does 9. Sizes vary from fractional horsepower to several thousand horsepower used for such appli-cations as diesel-electric locomotives. Physics: Principles and How much work do the students do on the car? W! An electric motor develops 65 kW of power as it lifts a loaded elevator 17. Students will construct electric motors, and through qualitative analysis. And that has remained, with the air suspension providing a firm but comfortable ride despite the P100D's 21-inch rims and very low profile tyres. Mike Braun. When the hot gas in the coils meets the cooler air temperature of the kitchen, it becomes a liquid. These are rechargeable batteries and are either of the lead or the Lithium types. 6 × 10 × 1 = 6 J. Take the case of a door bell. Around the armature is the stator, which holds insulated coils of wire, usually copper. “Just remember one thing. Electric motors involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current. At the same time the petrol engine also powers the generator and the electric motor uses electricity from the battery and generator as needed. 5 to 4 kW direct current (DC) electric motors, operated at 12 to 60 volts DC. And the bigger the magnets, the more powerful the force that spins the cylinder. The famed inventor created the first electric generator, called the dynamo, as well as the first electric motor. This force the electric wire experiences is called the motor effect and only happens when the wire is carrying electricity. But that's not all. If I could, I would draw it above your screen and below your screen. Mechanics, Optics, Electronics, Heat are the main Types of Physics. An electric motor develops 89 kW of power as it lifts a loaded elevator 15. Learn about carbon brushes and commutators and how they help electric motors work with information from a science teacher in this video. So the coil rotates. An electric motor is an electrical machine that converts electrical energy into mechanical energy. This kinetic energy is converted to heat. "When the speed is zero (which is always the case on the boundary layer of the wire), the heat flux is due to conduction only; this means that the Nusselt number (Nu) is equal to 1. A motor and generator perform opposite functions, but their fundamental structure is the same. An electric car is definitely a wiring project. In 1906, a coal-gas balloon, the United States, piloted by Lieutenant Frank P. It has many applications in our daily life, such as electric motors, scanners used in hospitals and human brain. (Basic law of physics: work = force x distance. How often do we use this electrical machine in a day? Several times a day most likely. The current corresponds to the number of cars passing a given point each second. In a motor, the stator is the part that remains motionless and the rotor is the part that moves. Osheroff Biographical E thnically, I come from a mixed family. The clapper hits the bell and makes it ring. If you try to. The magnetic field then causes a force with a magnet that causes movement or spinning that runs the motor. The electromagnet is a piece of iron or steel with wire wound around it in one direction, and it turns the drive shaft which can spin freely along one axis. Electricity is important because we can use it to make so many things work. How real electric motors work John Storey Note: These pages are intended to be read in conjunction with Joe's "Electric motors and generators" pages of the HSC Physics resources (/%7Ejw/HSCmotors. December 1, 2002 for QuietFlyer Magazine. This is a physics video that explains the basic principle of an electric motor generator. Electric motors have many uses. So the coil rotates. Name two applications you use everyday that use electric motors. Say a robot uses two of. physics questions and answers How Much Work Does The Electric Motor Of A Van De Graff Generator Do To Lift A Positive Ion Question: How Much Work Does The Electric Motor Of A Van De Graff Generator Do To Lift A Positive Ion (q = E) If The Potential Of The Spherical Electrode Is 1. Unfortunately, you will never generate enough power from a homopolar motor to power any domestic appliances but they are great fun to make and really useful for demonstrating the effects of electromagnetism and how electric motors work. But let's say I have-- part of the electric circuit is a loop. PHYS 401 Physics of Ham Radio 27 Basic Electrical Principles • Conductors - keep loose grip on their electrons and allow electrons to move freely. To do this, we take the basic design of a galvanometer and modify it to allow it to turn. Stall torque is the minimum torque needed to stop the motor from turning and the no load speed is the rotational speed of the motor when there is no torque being applied. On this page we hope you will learn what makes an electric motor spin. An electric current, however, forces unpaired electrons inside a metal wire to line up, allowing them to join forces and create a coherent magnetic field. If your basic physics question isn't answered in a day, you can post it in the Tuesday thread in /r/Physics How do magnetic fields in electric motor work?. And then in that magnetic field I have an electric circuit. where P out - output power, measured in watts (W);. Rotational energy is a form of kinetic energy. Help is available for your ScienceProject. We take a look at some of the more prevalent. This effect can be used to make an electric motor. Motors supposed to do some work and two important values define how powerful the motor is. The spinning wheel is mounted in the gimbal so as to be free of external torque. There are machines that can convert DC to AC power. 15 kJ) 111. Pinwheels and Gravity. Generally, though, it’s better for an electric car to have rear-wheel drive, as this enables the electric motor to transfer its powerful torque to the road surface better and more efficiently. His discoveries were published in the years 1841 and 1873. They transform electrical energy into mechanical energy. Now in liquid form at high pressure, the refrigerant. In this motor, the sliding electrical contact between the ends of the coil of wire and the paper clips turns off the current for half of each cycle. MOTOR) HOW DOES AN ELECTRIC GENERATOR WORK; Electric Effect, Effect Seebeck, Physics Project Report on Thermo Electric. Electric motors work by the help of electromagnetism. Instead , it is ” I ” (capitol i ). In addition, her work in early hot hohlraum work is the basis for ongoing weapons physics studies. AEVs use a traction battery pack (usually a lithium-ion battery) to store the electricity used by the motor to drive the vehicle's wheels. How does an electric scooter work? The electric scooter works on batteries. How fast can you do work? Power tells us how fast work is done. Do all rough work in this book. This north pole is attracted to the south pole on the left. And it's the ability of an electric current to turn wires into temporary magnets that makes it possible for us to have motors that can be switched on and off. Osheroff Biographical E thnically, I come from a mixed family. The Spring Force. In Unit 4, Work and Energy we learned about how forces moves another object in a direction creating work. How Do All-Electric Cars Work? All-electric vehicles (EVs) have an electric motor instead of an internal combustion engine. I get that the the coin vibration motors are very cheap and can keep the overall size of the robot fairly small, whereas with DC motors, wheels will be involved which will make the overall body size of the robot bigger compared to using vibration motors. Created by Sal Khan. An electric car is definitely a wiring project. Before the electric motor can be improved, though, people must learn how electric motors work. Much has been written about choosing the right motor, estimating performance, installing the motor in your plane, and so on. This Month in Physics History APS News Archives. All of these motors work in more or less same principle. Around the armature is the stator, which holds insulated coils of wire, usually copper. An electric motor works by using magnets along with coils of wire to transfer electric energy into kinetic energy. Q&A > Physics > which can do work faster-a 700 watt gasoline engine or a 300 watt electric motor which can do work faster-a 700 watt gasoline engine or a 300 watt electric motor which can do work faster-a 700 watt gasoline engine or a 300 watt e. Electric Motors The defining characteristic of an electric motor is that it must be able to rotate freely through a complete circle and keep on turning. The central part of the motor is a cylinder called the armature or rotor. com Member.