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What is the r.m.s. value of an alternati...

What is the r.m.s. value of an alternating current which when passed through a resistor produces heat which is thrice of that produced by a direct current of `2` amperes in the same resistor?

A

6 ampere

B

2 ampere

C

3.46 ampere

D

0.65 ampere

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The correct Answer is:
D
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