Which One of the Following Statements Concerning an Ac Circuit

Multiple Choice

Which one of the following statements concerning an ac circuit is true?

A) The current and voltage are in phase for a capacitor in an ac circuit.
B) On average, the power dissipated by a resistor in an ac circuit is zero.
C) For a resistor in an ac circuit, the current and voltage are 90° out of phase.
D) Inductors in an ac circuit offer little opposition to current at high frequencies.
E) When only resistance is present in an ac circuit, voltage and current are in phase.