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Michael faradey observed that whenever magnetic flux linked with a coil changes ,an emf is induced in the coil.suppose a coil of N turns and Radius R is kept normal to a varrying magnetic field B=B_0 cos Omega t. Obtain the emf induced in the coil.

Answer»

SOLUTION :INDUCED EMF `epsilon`=`(-dphi//dt)`=-`d[NB_0(pi R^2)cos OMEGA t//dt]`=-NB_0(piR^2)(-SIN omega t,omega)`=` `NB_0(pi R^2) omega sin omega t``


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