In the series a.c circuit shown above, the p.d across the in...
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
A.
2V
B.
10V
C.
14V
D.
48V
Correct answer is E
The effective V =
√ VR2 + VL2
=
√ 62 + 82
=
√ 36 + 64
=
√ 100
10V