Q.

An alternating current having peak value 28 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where i is

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answer is 2.

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Detailed Solution

idc=irms=ipeak2=282=20Aapprox
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An alternating current having peak value 28 A is used to heat a metal wire. To produce the same heating effect, a constant current i can be used where i is