Solve this: 131 A pair of stationary and infinite long bent wires are placed in the x-y plane - Physics - Magnetism And Matter

Question

Solve this:

131 A pair of stationary and infinite long bent wires are placed in
the x-y plane The wire carrying currents of 10 A each as a shown in
figure The segments l and M are paral el to x-axis The segment P
and Q are parallel to y-axis, such that OS=OR=0 02 m the magnetic
field induction at the origin O is

1) 103 T 2) 4 x 10-3 T 3) 2 x 10-4
T 4) 10-4 T

Anshu Agrawal · Accepted Answer

Dear student,
Since point O lies along the segments LR and SM, the magnetic field
to these segments is zero at O As point O is close to R and S, the
net magnetic field due to segments PR and QS is
B=μo I4πRO+μo I4πSO=μoI4π(1d+1d)    =μo4π(2Id)      = !0-7×2×100
02B=10-4Wb/m2vertically upwards

Option 4 is correct

Regards