A uniform but time-varying magnetic field 
exists in a circular region of radius 
and is directed into the plane of the paper, as shown. The magnitude of the induced electric field at point 
at a distance 
from the centre of the circular region
A
Is zero
B
Decreases as 
C
Increases as 
D
Decreases as 
Text Solution
Verified by ExpertsThe correct answer is:
B
Therefore, 
Therefore, the Induced electric field 
For 
or 
or 
At 
Therefore, the variation of 
with 
(distance from centre) will be as follows:
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