Questions
A rectangular coil ABCD is rotated anticlockwise with a uniform angular velocity about the axis shown in diagram below. The axis of rotation of the coil as well as the magnetic field B are horizontal. The induced e.m.f. in the coil would be maximum when
detailed solution
Correct option is A
EMF = e=e0sinθ where θ is the angle between area vector A→ and magnetic field vector B →;e will be maximum when θ is 90° i.e., plane of the coil will be horizontal.Talk 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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