A wire carrying current 
has the shape as shown in adjoining figure. Linear parts of the wire are very long and parallel to 
‐axis while semicircular portion of radius 
is lying in Y‐Z plane. Magnetic field at point 
is
A
B
C
D
.
Text Solution
Verified by ExpertsThe correct answer is:
A
Given situation is shown in the figure. Parallel wires 1 and 3 are semi‐infinite, so magnetic field at 
due to them
Magnetic field at 
due to semi‐circular arc in 
‐plane is given by 
Net magnetic field at point 
is given by
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