Ans. The RMS (Root Mean Square) value of an alternating current is the equivalent value of a direct current that produces the same amount of heat in a given resistor. It is calculated using the formula RMS = (Imax / √2), where Imax is the maximum value of the current. For example, if the maximum value of the current is 10 A, then the RMS value would be (10 / √2) ≈ 7.07 A.