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Calculate the emf of a material having flux density 5sin t in an area of 0.5 units.(a) 2.5 sin t(b) -2.5 cos t(c) -5 sin t(d) 5 cos tI have been asked this question in quiz.My question is based upon Maxwell Law 1 in division Maxwell Equations of Electromagnetic Theory

Answer»

Right choice is (d) 5 COS t

The explanation: The emf can be WRITTEN as Vemf = -d(∫B.ds)/dt. It can be written as Vemf = -B= -5sin t, since the integration and DIFFERENTIATION gets cancelled.



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