Q.
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 :
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a
0.1 s
b
0.01 s
c
1 s
d
20 s
answer is A.
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Detailed Solution
Total area= 50 X 100 X 0.0001= 0.5Total flux= 10-2 tesla-m20.1= 10-2t t=0.1 s
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