A current i ampere flows in a circular arc of wire whose radius is R, which subtend an angle 3π/2 radian at its center. The magnetic induction B at the center is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
For a loop, magnetic induction at center,
When loop subtends angle 
at center, then
In the given problem, 
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