Q15 of 238 Page 91

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

Every time in a revolution when the coil passes the vertical position the split ring is there to reverse the current.


More from this chapter

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13

Of what substance is the core of the coil of an electric motor made?

 14

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

Commutator; Brush

 16

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 ............ .

 17

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.