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An ac voltage is represented by E=220...

An ac voltage is represented by
`E=220 sqrt(2) cos (50 pi) t`
How many times will the current become zero in 1 s?

A

50 times

B

100 times

C

30 times

D

25 times

Text Solution

Verified by Experts

The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-ALTERNATING CURRENT -Assignment (Section - A) ( Objective Type Questions ( One option is correct))
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  6. Consider an ac circuit where an incandescent light bulb is in series ...

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  7. the following option is correctfor an ideal capacitor connected to a s...

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  11. In a series lags the applied emf. The rate at which energy is dissipat...

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  15. A sinusoidal alternating current of peak value (I0) passes through a h...

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  17. Two resistors are connected across an AC source of 5 V. The P.D. acro...

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  19. Refer to the series LCR AC circuit. Find the value of V(3)

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