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Q.

The number of turns in primary and secondary coils of a transformer are 100 and 20 respectively. If an alternating potential of 200 volt is applied to the primary, the induced potential in secondary will be

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a

10 V

b

40 V

c

1000 V

d

20,000 V

answer is B.

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Detailed Solution

EpEs=NpNs⇒200Es=10020⇒Es=40 V
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The number of turns in primary and secondary coils of a transformer are 100 and 20 respectively. If an alternating potential of 200 volt is applied to the primary, the induced potential in secondary will be