The power dissipated in an a.c. circuit with an r.m.s, current of 5A, r.m.s voltage of 10V and a phase angle of 60o is
-
25W
- 50W
- 120W
- 125W
The correct answer is: A
Explanation
P = IVcos\(\theta\)= 5 x 10 x cos60
= 25W