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If the instantaneous current in a circui...

If the instantaneous current in a circuit is given by `I=2 cos (omegat+phi)` amperes, the rms value of the current is

A

2A

B

`sqrt(2)A`

C

`2sqrt(2)A`

D

0A

Text Solution

Verified by Experts

The correct Answer is:
B
`I_(rms)=(I_(o))/(sqrt(2))=(2)/(sqrt(2))=sqrt(2)A`
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