Which of the following statements can be true for a resistor

Which of the following statements can be true for a resistor connected in a simple series circuit to an operating AC generator? (Assume that the circuit can be open or closed. Select all that apply.)

Solution

(c). The average power is proportional to the rms current which is non-zero even though the average current is zero. (a) is only valid for an open circuit. (b) and (d) can never be true because iav = 0 for AC currents