The current passing through a conducting loop in the form of equilateral triangle of side 
is 2 A. The magnetic field at its centroid is 
. The value of 
is 
-
(Given : 
SI units)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
For an equilateral triangle of side 
, the distance of the centroid from any side is 
.
Given side 
.
So, 
.
The magnetic field at the centroid due to one side of the triangle is 
.
For an equilateral triangle, 
.
.
The total magnetic field at the centroid due to all three sides is 
.
Comparing with 
T, we get 
.
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