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Calculate the emf in a material with flux linkage of 3.5t^2 at 2 seconds.(a) 3.5(b) -7(c) -14(d) 28This question was posed to me in final exam.The question is from Maxwell Law in Time Static Fields in portion Maxwell Equations of Electromagnetic Theory

Answer»

The CORRECT option is (C) -14

Easiest EXPLANATION: The emf induced in a material with flux linkage is GIVEN by Vemf= -dλ/dt. On substituting λ= 3.5t^2, we get emf = -7t. At TIME t = 2sec, the emf will be -14 units.



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