The rms current is equal to the direct current that:
A)produces the same average voltage across a resistor as in an AC circuit.
B)dissipates an equal amount of energy in a resistor at the same rate as in an AC circuit.
C)provides the same average current in a resistor as in an AC circuit.
D)results in the same peak power in a resistor as in an AC circuit.

Question

Quizplus · Accepted Answer

The root mean square (rms) current is defined as the direct current that dissipates the same amount of energy in a resistor as an alternating current (AC) does over one cycle. This is because the power dissipated by a resistor (P = I^2R for DC, and P = I_rms^2R for AC) is directly proportional to the square of the current through the resistor.

The Rms Current Is Equal to the Direct Current That