# What causes the motor effect?

Contents

## What moves in the motor effect?

A current-carrying wire or coil can exert a force on a permanent magnet. This is called the motor effect. The force increases if the strength of the magnetic field and/or current increases. …

## What is the consequence of the motor effect?

Motor effect is when a current carrying conductor in a magnetic field experiences a force, hence its consequence is electromagnetic induction.

## Do motors use the motor effect?

The DC electric motor. An electric motor is a device that transforms electrical potential energy into rotational kinetic energy. Electric motors produce rotational motion by passing a current through a coil in a magnetic field. … It is an application of the motor effect.

## How can we increase motor effect?

The speed of rotation of the coil can be increased by:

1. increasing the size of the current;
2. using a stronger magnet;
3. increasing the number of turns of wire in the coil;
4. reducing friction between the coil and the axel it rotates on.

## Who invented motor effect?

The first surviving Faraday apparatus, dating from 1822, which demonstrates his work in magnetic rotation. Faraday used this mercury bath to transform electrical energy into mechanical energy, creating the first electric motor.

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## How is rotation caused in an electric motor?

Magnetic fields cause motors to rotate. … A coil of wire carrying a current in a magnetic field tends to rotate. This is the basis of an electric motor. The force on a conductor in a magnetic field causes the rotation of the coil in an electric motor.

## What is the motor effect used for in real life?

It is used to predict in which direction a current-carrying wire will move in a magnetic field so make sure that you revise it well. If the two ends of the wire used to make the coil were connected directly to the electricity supply, they would soon twist together, preventing the coil from turning.

## What happens if you increase the current in a motor?

An increase in current is a danger to the motor only if that current exceeds the motor’s nameplate current rating. When amps go above the nameplate rating, heat begins to build up in the motor. Without a timely correction, this heat will damage the motor.

## What needs to be present for motion to occur in the motor effect?

The Motor Effect is a very important physical phenomenon that can be summarised as follows: A current carrying conductor inside a magnetic field will experience a force, called the Motor Effect Force. … Either way, for the Motor Effect to occur, there must be a current flowing through the conductor.

## What is the effect in the motor if we reverse the direction of the current in the conductor?

In this case we are not dealing with rotation as in an electric motor, but with a mechanical ‘to and fro’ vibration effect, but it still involves what we call the ‘motor effect’. When the ac current reverses, the force acts in the opposite direction, so the cone moves in the opposite direction too.

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