Discussion on Electromagnetic Induction


 

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Posted on: 05:22:40 PM on April 19, 2015
Posted By:
AJAY
how is energy conserved during the induction of current??


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Posted on: 10:03:14 PM on March 22, 2017
Lenz' law is a manifestation of the conservation of energy. The induced EMF produces a current that opposes the change in flux, because a change in flux means a change in energy. Energy can enter or leave, but not instantaneously. Lenz' law is a consequence. As the change begins, the law says induction opposes and, thus, slows the change. In fact, if the induced EMF were in the same direction as the change in flux, there would be a positive feedback that would give us free energy from no apparent source—conservation of energy would be violated. Source: Boundless. “Faraday's Law of Induction and Lenz' Law.” Boundless Physics Boundless, 26 May. 2016. Retrieved 22 Mar. 2017 from https://www.boundless.com/physics/textbooks/boundless-physics-textbook/induction-ac-circuits-and-electrical-technologies-22/magnetic-flux-induction-and-faraday-s-law-161/faraday-s-law-of-induction-and-lenz-law-569-6693/





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