A circular coil of one turn of radius 5.0 cm is rotated about a diameter with a constant angular speed of 80 revolutions per minute. A uniform magnetic field 
exists in a direction perpendicular to the axis of rotation, the maximum emf induced, the average emf induced in the coil over a long period and the average of the squares of emf induced over a long period is
A
, zero, 
B
, zero, 
C
, zero, 
D
, zero, 
Text Solution
Verified by ExpertsThe correct answer is:
B
Let at any time, normal to loop makes an angle θ with magnetic field,
Over a long period, i.e. one time period, average of
induced emf, 
and 
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