# What causes DC motors to rotate?

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The rotation of the DC motor is accomplished by the force which is developed on a current-carrying conductor in a magnetic field. The current-carrying conductor is connected to the shaft which is able to rotate relative to the stationary body of the DC motor.

## What causes the rotation of motor?

A coil of wire carrying a current in a magnetic field experiences a force that tends to make it rotate. This effect can be used to make an electric motor.

## What device in a DC motor causes the motor to rotate?

In a DC motor, the stator provides a rotating magnetic field that drives the armature to rotate.

## What is the effect that causes the rotation in the motor called?

Electric motors use the forces produced by magnetic fields to produce a turning motion. … This is called the motor effect . To make a simple DC motor , you need: two bar magnets. a coil of wire wrapped around something to support it.

## What makes a motor spin faster?

How can I make the motor spin faster or slower? 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.

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## How can you control the rotation of a DC motor?

If you switch the leads, the motor will rotate in the opposite direction. To control the direction of the spin of DC motor, without changing the way that the leads are connected, you can use a circuit called an H-Bridge. An H bridge is an electronic circuit that can drive the motor in both directions.

## How do you rotate a DC motor?

Your DC motor can be configured to turn in either direction by simply inverting the polarity of the applied voltage. The change in the flow of current switches the direction of the spinning force, causing the motor’s shaft to begin turning in the opposite direction.

## How do you make a dc motor spin faster?

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.

## What is the rotating part of a DC machine?

The rotating part of the DC machine or a DC Generator is called the Armature. The armature consists of a shaft upon which a laminated cylinder, called Amature Core is placed.

## How can you make a DC motor stronger?

How to improve torque and RPM of a DC motor?

1. Case 1: Increase/Decrease strength of permanent magnets. What would happen to torque and RPM? …
2. Case 2: Increase/Decrease size of magnet wires. …
3. Case 3: Increase/Decrease the size of armature. …
4. Case 4: Increase/Decrease the number of turns (coil).
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## What determines DC motor speed?

DC Motor Speeds

The number of wire turns in an armature, the operating voltage of the motor, and the strength of the magnets all affect motor speed. If a DC motor is running on a 12 V battery, that is the maximum voltage available to the unit and the motor will only be able to perform at a speed rated for 12 V.

## Can a DC motor run on AC?

We already know that in a DC Series motor the field winding has very less resistance than a DC Shunt Motor as the field is connected in series with the Armature Winding. So if we give AC supply on a DC Series Motor it will run perfectly. In fact, DC Series can run on both AC and DC supply.