Question

A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm^2. The inductor of the coil corresponding to a magnetizing electric current of 3 A will be? (a) 37.68 μH (b) 47.68 μH (c) 113.04 μH (d) 120.58 μH The question was asked in an interview. I would like to ask this question from Advanced Problems on Millman’s Theorem and Maximum Power Transfer Theorem in chapter Useful Theorems in Circuit Analysis 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) 113.04 μH The explanation: Inductance of the coil, L = \(\frac{μ_0 n^2 A}{l}\) = \(\frac{4π X 10^{-7} X 300 X 300 X 300 X 10^{-6}}{300 X 10^{-3}}\) = 113.04 μH.