Question
Question: In the figure shown the magnetic field at the point P is 
A
3πa2μ0i4−π2
B

C
3ππ2μ0i(4+π2)
D
3πa2μ0i(4−π2)
Answer

Explanation
Solution

Where (B1)p=4π(23a)μoi(−j^) (semi-infinite wire)
(B2)p=4(23a)μoi(+k^) , 
, (B5)p=4π(2a)μoi(−j^)


.
Hence (2) is correct

