# Question: Who created the first simple electric motor?

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In 1821, in London, Michael Faraday demonstrated the first simple electric motor, a wire carrying a current rotating around a fixed electromagnet, known as the homopolar motor. Faraday was intrigued by the experiments of Hans Christian Ørsted discovering electromagnetism.

1834

Zenobe Gramme

## Who discovered magnetic energy?

James Clerk Maxwell

## Can an electric motor generate electricity?

Converting energy from one form to another is the key to understanding the differences between electric motors and generators. An electric motor converts electricity into mechanical energy, providing a power source for machinery. A generator does the opposite of this, converting mechanical energy into electricity.

## Where do we use electric motors?

The largest electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors are found in industrial fans, blowers and pumps, machine tools, household appliances, power tools and disk drives.

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## How do you make an electric motor more powerful?

We can increase the turning force (or torque) that the motor can create in three ways: either we can have a more powerful permanent magnet, or we can increase the electric current flowing through the wire, or we can make the coil so it has many “turns” (loops) of very thin wire instead of one “turn” of thick wire.

Galileo Ferraris

## What makes an electric motor spin faster?

ANSWER: In order to make the motor spin faster or slower you must increase or decrease the strength of the magnetic field. This is done by either changing the amount of current running through the motor or varying the distance of the permanent magnets from the motor.

## Are Tesla Motors AC or DC?

IMHO, AC Propulsion (Tesla Motors) uses AC because a mechanically commutated DC motor that meets the high “turn down” ratio of a vehicle application is more complex than an electronically commutated AC motor. Without that high turndown ratio the physical size of the motor producing just raw torque would be prohibitive.

## What is in a DC motor?

A DC motor consists of an stator, an armature, a rotor and a commutator with brushes. Opposite polarity between the two magnetic fields inside the motor cause it to turn. DC motors are the simplest type of motor and are used in household appliances, such as electric razors, and in electric windows in cars.

## Why are electric motors important?

More than 40% of generated electricity is consumed by industry, and two-thirds of that energy is used by electric motors. By using more efficient motors it would be possible to achieve huge savings in both energy and carbon dioxide emissions.

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## What happens if a magnet is cut in half?

You can think of a magnet as a bundle of tiny magnets, called magnetic domains, that are jammed together. Each one reinforces the magnetic fields of the others. Each one has a tiny north and south pole. If you cut one in half, the newly cut faces will become the new north or south poles of the smaller pieces.