Question

Find the displacement current when the flux density is given by t^3 at 2 seconds. (a) 3 (b) 6 (c) 12 (d) 27 I got this question by my school teacher while I was bunking the class. This key question is from Faraday Law, EMF and Lenz Law 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

Right choice is (c) 12 Easy explanation: The displacement current is given by Jd = dD/dt. Thus Jd = 3t^2. At time t = 2, we get Jd = 3(2)^2= 12A.