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For an AC given by I = 50cos(100 t + 45^...

For an AC given by I = 50cos(100 t + `45^@`)A. The value of rms = ..... A.

A

`50sqrt2`

B

`25sqrt2`

C

`25`

D

0

Text Solution

Verified by Experts

The correct Answer is:
B
By comparing `I=50cos (100t+45^@)` with `I=I_m cos (omegat+phi)`
`I_m`=50 A
`therefore I_(rms)=I_m/sqrt2=50/sqrt2=25sqrt2` A
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