Questions
A coil has 1000 turns and 500 cm2 as its area. The plane of the coil is placed at right angles to a magnetic induction field of The coil is rotated through 1800 in 0.2 s. The average e.m.f. induced in the coil, in millivolts, is
detailed solution
Correct option is B
e=−NBAcosθ2−cosθ1Δte=−1000×2×10−4×500×10−4cos180∘−cos0∘0.2=10−2 volt =10 mVTalk 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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