Question

In a parallel RL circuit, 12 A current enters into the resistor R and 16 A current enters into the Inductor L. The total current I the sinusoidal source is ___________ (a) 25 A (b) 4 A (c) 20 A (d) Cannot be determined I got this question in an internship interview. The query is from Advanced Problems Involving Complex Circuit Diagram in division Network Theory and Complex Circuit Diagram of Network Theory Select the correct answer from above options network theory questions and answers, network theory questions pdf, network theory question bank, network theory gate questions and answers pdf, mcq on network theory pdf, gate network theory questions and solutions, network theory mcq Test , ies network theory questions, Network theory Questions for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)

Answer 1

The correct choice is (c) 20 A The explanation is: Currents in resistance and inductance are out of phase by 90°. Hence, I = I_1^2 + I_2^2 Or, I = [12^2 + 16^2]^0.5 Or, I = \sqrt{144+256} = \sqrt{400} = 20 A.