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A resistance of 20ohms is connected to a...

A resistance of `20ohms` is connected to a source of an alternating potential `V=220sin(100pit)`. The time taken by the current to change from its peak value to r.m.s. value is

A

0.2sec

B

0.25sec

C

`25xx10^(-3)sec`

D

`2.5xx10^(-3)sec`

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Verified by Experts

The correct Answer is:
D
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