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An alternating current is given by I=100...

An alternating current is given by `I=100 sin(5 pi t)`. How many times will be current become zero in one second?

A

a. 50 times

B

b.25 times

C

c. 40 times

D

d. 100 times

Text Solution

Verified by Experts

The correct Answer is:
A
`omega t = 2 pi f t = 50 pi t :. 2 f = 50 :. f = 25 Hz`
The current become zero, twice in one cycle.
`:.` In one second it will be zero, 50 times .
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MARVEL PUBLICATION-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS -TEST YOUR GRASP - 16
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