Question

Find the inductance of a material with 100 turns, area 12 units and current of 2A in air. (a) 0.75mH (b) 7.5mH (c) 75mH (d) 753mH This question was addressed to me in unit test. I'd like to ask this question from Magnostatic Energy in division Magnetostics of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

Answer 1

The correct choice is (a) 0.75mH To explain: The inductance of any material(coil) is given by L = μ N^2A/I. On substituting N = 100, A = 0.12 and I = 2, we get L = 4π x 10^-7 x 100^2 x 0.12/2 = 0.75 units.