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
Attached Figure / Diagram
A
2V
B
10V
C
14V
D
48V
Verified Correct Answer: B.
Physical Principles & Numerical Solution
The effective V =
√ VR2 + VL2
=
√ 62 + 82
=
√ 36 + 64
=
√ 100
10V
Source: Myschool Past Questions Archive (Record #11274)