Questions
A metallic ring of radius 1 m is placed in a uniform magnetic field of induction with its plane perpendicular to the direction of magnetic field. Now the radius of the ring is halved in a time interval of 0.1 second. Then average emf induced in the ring is
detailed solution
Correct option is A
Average emf =B.πr2 − B.πr/22Δt=34 πr2. BΔt=34 π12 . 10.1 μV= 7.5 π μ.VTalk to our academic expert!
Similar Questions
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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