Q24 of 45 Page 302

What will happen when the frequency of rotation in an AC dynamo is doubled?

When the frequency of rotation in an AC dynamo is increased, the emf induced in the coil of the dynamo also increases by the same amount. So, when the frequency is doubled the emf induced is also doubled.

The time period of rotation of the coil will decrease with the increase in frequency. So, the time period in this case will be halved.


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Give reasons.


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vi) Angle of emergence


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