CBSE · Class 12 · Physics · Alternating CurrentWhat is meant by the root mean square (RMS) value of alternating current? State its relation with peak value.

The root mean square (RMS) value of alternating current is defined as that steady direct current which produces the same amount of heat in a given resistance in a given time as is produced by the alternating current flowing through the same resistance for the same time. It is also called the virtual value or effective value of alternating current. The relationship between the RMS value ($I_{rms}$) and the peak value ($I_0$) is given by $I_{rms} = \frac{I_0}{\sqrt{2}} \approx 0.707 I_0$.