RL Circuits - Engineering

Q1:

In a series RL circuit, 12 V rms is measured across the resistor, and 14 V rms is measured across the inductor. The peak value of the source voltage is

A 18.4 V

B 26.0 V

C 2 V

D 20 V

ANS:B - 26.0 V

The right explanation @Asad.