In a circuit an alternating current and a direct current are supplied together. The expression of the instantaneous current is given as i = 3 + 6 sinωt . Then the r.m.*. value of the current is
(a) 3 A
(b) 6 A
(c) 3√2 A
(d) 3√3 A
The correct option is (d) 3√3 A.
Explanation:
The given current is a mixture of a dc component of 3 A and an alternating current of maximum value 6 A
Hence r.m.*. value
