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Calculate the emf of a material having a flux linkage of 2t^2 at time t = 1second.(a) 2(b) 4(c) 8(d) 16This 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

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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.



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