RL Circuits - Technical MCQs

Q1:

Which of the following statements is true if R1 opens in the circuit in the given circuit?

A IL2 increases.

B ZT decreases.

C VS increases.

D VL1 equals 0 V.

ANS:D - VL1 equals 0 V.

As r1=0, it forms an open circuit due to which the I1 in the branch of r1 and L1 is 0. So VL1=0.