An alternating current is given by I =...

An alternating current is given by
`I = i_1 cos omegat + i_2 sin omegat`.
The rms current is given by

A

`(i_1 + i_2)/(sqrt2)`

B

`(|i_1 + i_2|)/(sqrt2)`

C

`sqrt((i_1^2 + i_2^2)/(2)`

D

`sqrt((i_1^2 + i_2^2)/(sqrt2)`

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The correct Answer is:

C

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