The magnitude of the force vector acting on a unit length of a thin wire carrying a current 
at a point 
, if the wire is bent as shown in the figure with a radius, 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
According to the question,
Magnetic field by semi-circular current wire at center 
.
Magnitude of the force on thin wire per unit length.
, where 
Putting the given values,
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