First slide
Faraday's law of Electromagnetic induction
Question

The magnetic field in a coil of 100 turns and 40 square cm area is increased from 1 T to 6 T in 2 s. The magnetic field is perpendicular to the coil. The e.m.f. generated in it is

Moderate
Solution

e=NΔBΔtAcosθ

=100×(61)2×40×104cos0

|e|=1V

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