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The equation of an alternating emf is vo...

The equation of an alternating emf is volt. Find `V= 120sin(100pit)cos(100pit)` Volt the peak value of its emf and its frequency.

A

120 V, 100Hz

B

`(120)/(sqrt(2))V, 100Hz`

C

60V, 200Hz

D

60V, 100Hz

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The correct Answer is:
D
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