Published by:
CGP EDU Academic Team
Published on: August 12, 2026
PART-I PHYSICS
Find magnetic field at 
. Where 
is the radius of the loop?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
To get magnetic field at 0 , we need to find magnetic field due to each current carrying part 1, 2, 3 and 4 individually.
Let's take total magnetic field as 
, then
Since 2 and 4 are parts of same wire, hence
denotes that direction of magnetic field is in the plane coming out of the plane of current.
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