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A 50 Hz a.c. current of crest value 1A f...

A 50 Hz a.c. current of crest value 1A flows through the primary of a transformer. If the mutual inductance between the primary and secondary be `1.5 H` , the crest voltage induced in secondary is-

A

75 V

B

150 V

C

471 V

D

300 V

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