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An AC source is 120 V-60 Hz. The value...

An AC source is 120 V-60 Hz. The value of voltage after 1/720 s from start will be

A

`20.2 V`

B

`42.4` V

C

`84 . 4 V`

D

`106.8 ` V

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The correct Answer is:
C
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