Name some devices in which electric motors are used.

Name some devices in which electric motors are used.

Ans: – The ceiling fan in our household uses the electric motor.

How does current reach from electricity production centre to the houses?

Ans: – The current at first produced from a power plant then the high voltage line transfers this current to the local transformer then from that by using the step-down transformer the current is reached to the house.

What is Flemings left hand rule?

Ans: – According to Fleming left hand rule the direction is perpendicular to both the direction of the current and the magnetic field then if the first finger shows the direction of the magnetic field, middle one the direction of current flow, then the thumb shows the direction of force.

When does an electric short circuit occur?

Ans: – The high resistance commenting the two sources affected by the excess surge of current and the appliances get damaged.

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