First slide
Faraday's law of Electromagnetic induction
Question

The magnetic field of 2 x 10-2 tesla acts at right-angles to a coil of area 100 cm2 with 50 turns. The average emf induced in the coil is 0.1 V when it is removed from the field in time t. The value of t is :

Moderate
Solution

Total area= 50 X 100 X 0.0001= 0.5

Total flux= 10-2 tesla-m2

0.1= 10-2t t=0.1 s

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