A coil of 1200 turns and mean area of 
is held perpendicular to a uniform magnetic field of induction 
. The resistance of the coil is 
. When the coil is rotated through 
in the magnetic field in 0.1s, the average electric current (in mA) induced is:
Text Solution
Verified by ExpertsB
Magnetic flux linked with each turn of the coil
(as coil is perpendicular to B)
On rotating the coil through 
,
Magnetic flux linked with the coil, 
Change in magnetic flux
So, emf induced in the coil
where, N is the number of turns in the coil.
The current in the coil is given by:
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