Entry Test MCQ :: Alternating Current

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An alternating potential difference is connected across a pure resistor and the frequency of the supply is varied but the rms value of the voltage is kept constant. The mean rate of heat dissipated from the resistor is

[A].	Directly proportional to f	[B].	Directly proportional to ??f
[C].	Directly proportional to f2	[D].	Inversely proportional to f

Answer: Option C

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