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RL Circuits - Technical MCQs

Q1:

Calculate the voltage dropped across R1 in the given circuit.

A 14 V

B 26.8 V

C 28 V

D 0 V

ANS:B - 26.8 V

Voltage across resistor, R1= Resistance value * Supply voltage/Total resistance.
VR1 = R1*Vs/ (sqrt(R1^2+(2*pi*f*L)^2).
VR1 = 10*27/(sqrt(10^2 + (2*pi*20*10^3*10*10^- 6)^2).
= 26.78V.