A coil in the shape of an equilateral triangle of side 
is suspended between the pole pieces of a permanent magnet such that 
is in plane of the coil. If due to a current 
in the triangle a torque 
acts on it, the side 
of the triangle is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The current flowing clockwise in the equilateral triangle has a magnetic field in the direction 
(as it appears that 
)
(area of equilateral triangle)
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