Question

Calculate the emf of a material having a flux linkage of 2t^2 at time t = 1second. (a) 2 (b) 4 (c) 8 (d) 16 This question was addressed to me in a job interview. This intriguing question originated from Maxwell Law 1 topic in portion Maxwell Equations 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 answer is (b) 4 The explanation: The emf of a material is given by Vemf = -dλ/dt. On substituting λ = 2t^2, the emf is 4t. At t = 1 sec, the emf will be 4 units.