Questions
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 :
detailed solution
Correct option is A
Total area= 50 X 100 X 0.0001= 0.5Total flux= 10-2 tesla-m20.1= 10-2t t=0.1 sTalk to our academic expert!
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A loop, having area 20cm2, is made of thin copper wire. If is placed in a uniform magnetic field of induction 1.5 Tesla with its plane perpendicular to the field. If area of the loop increases to 30 cm2 in 0.5 second, average emf induced in the loop is
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