Consider the circular loop having current i and with central point O. The magnetic field at the central point O is
A
acting downward B
acting downward C
acting downward D
acting upward
Text Solution
Verified by ExpertsThe correct answer is:
B
The angle subtended by circular part of the conductor is 
or 
.
Net magnetic field at point 
where, 
magnetic field due to 
and 
magnetic field due to arc I.
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