A wire in the form of a circular loop of radius 
lies with its plane normal to a magnetic field 
. If the wire is pulled to take a square shape in the same plane in time 
, the emf induced in the loop is given by:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Induced 
Since, the circumference of the circular loop 
,
The side of the square loop 
Therefore, 
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