In the loop shown, the magnetic induction at the point ' ' is
A
B
C
D
zero
Text Solution
Verified by ExpertsThe correct answer is:
B
Since the point lies on the lines of the straight wires, they contribute no magnetic induction at
. The magnetic induction at
due to arcs only. The magnetic induction at
due to arc of radius
is
The magnetic field at due to arc of radius
is
The net magnetic field at is
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