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For an A.C given by I = 50 cos (100t + 4...

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

A

Zero

B

`50sqrt2`

C

`25`

D

`25sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
D
Comparing the equation by I =`I_0cos(omegat+phi)`
`I_0=50A` so `I_("rms")=(I_0)/(sqrt2)=25sqrt2A`
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