A current of 
is flowing along the sides of an equilateral triangle of side 
. The magnetic field at the centroid of the triangle is ( 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Magnetic field due to finite current carrying wire is
The magnetic field due to each side is same in magnitude and direction, so the resultant field
(Here, 
)
For equilateral triangle, 
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