The root mean square (r.m.s.) value of an alternating current is equivalent to what steady (direct) current value that, when passed through a given circuit for the same duration, produces ________?
Explanation
The r.m.s. value of an alternating current corresponds to the value of a direct current that would produce the same amount of heat in a resistor over the same period. Therefore, the correct option states that the steady current produces the same heat as the alternating current when flowing through the same circuit.