In the series a.c circuit shown above, the p.d across the inductor is 8Vr.m.s and that across the resistor is 6Vr.m.s. The effective voltage is
- 2V
-
10V
- 14V
- 48V
The correct answer is: B
Explanation
The effective V =√ VR2 + VL2
=
√ 62 + 82
=
√ 36 + 64
=
√ 100
10V