a coil of 82 turns is 68.18x10^-3 m in radius and has its plane perpendicular to a 8 T magnetic field produced by a nearby electromagnet.
Ther current in the electromagnet is turned off leading the field to disappear and causing an emf to be induced in the coil. if it takes 17 x 10^-3 seconds for the field to disappear.
calculate magnitude of the emf induced in the coil in units of V.
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