A coil of 800 turns effective area 
is kept perpendicular to a magnetic field 
. When the plane of the coil is rotated by 
around any of its co-planar axis in 0.1 s, the emf induced in the coil will be [NEET 2019]
A
0.2 V
B
C
0.02 V
D
2 V
Text Solution
Verified by ExpertsThe correct answer is:
C
Given, area of coil, 
magnetic field, 
and number of turns, 
.
The magnetic flux linked with the coil is
…(i)
where, θ is the angle between B and A.
The emf induced when coil is rotated from 
to 
is
e 
[using Eq. (i)]
…(ii)
Here, 
Thus, substituting the given values in Eq. (ii), we get
e 
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