An ac circuit contains only a generator and a resistor.
Chapter 20, Problem 20.18(choose chapter or problem)
An ac circuit contains only a generator and a resistor. Which one of the following changes leads to the greatest average power being delivered to the circuit? (a) Double the peak voltage of the generator and double the resistance. (b) Double the resistance. (c) Double the peak voltage of the generator. (d) Double the peak voltage of the generator and reduce the resistance by a factor of two.
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