The current from an A.C. source is given...

The current from an A.C. source is given by `I = 2cos(omegat + phi)` then rms value of current is ……

zero

`sqrt2A`

`2sqrt2A`

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Verified by Experts

The correct Answer is:

Comparing equation `I=2cos(omegat+phi)` with
`I=I_m cos (omegat+phi)`
`I_m`=2A
`therefore I_(rms)=I_m/sqrt2=2/sqrt2=sqrt2A`

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