Fill in the following blanks with suitable words:

(a) Fleming's Rule for the motor effect uses the ............... hand.

(b) A motor contains a kind of switch called a ............ which reverses the current every half ............ .

In an electric motor, which of the following remains fixed and which rotates with the coil?

Commutator; Brush

What is the role of the split ring in an electric motor?

A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.

State two ways to increase the force on a current-carrying conductor in a magnetic field.