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If instantaneous current is given by i=4...

If instantaneous current is given by `i=4 cos(omega t + varphi)` amperes, then the `r.m.s.` value of current is

A

4 amperes

B

`2sqrt(2)` amperes

C

`4sqrt(2)` amperes

D

Zero amperes

Text Solution

Verified by Experts

The correct Answer is:
B
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