Question

Two wires X and Y each carry 20 A current in the opposite direction with respect to
other. If distance between the wires is 10 mm. Find the magnitude of B at point who
nito length current carrying solenoid at the corners of
(BY Does not interact
7.
7 mm away from the wire X and 3mm away from the Y
(A) 9.5x10^-5 T
(cm 2x10^-3 T
(B) 150x10^-1 T
(D) 10 T​

Answer 1

Answer:

Consider that magnetic field density at point P is zero due to current carrying conductors.

According to right hand palm rule No. 1, direction of magnetic field will be perpendicular to the plane of the paper

(1) Downward due to current flowing in conductor X.

(2) Upward due to current flowing in conductor Y.

Since at point P,B=0

B1=B2

2πμ0xL1=2πμ024−xL2

x5=24−x7

5(24−x)=7x

5×24=12x⇒x=10cm from conductor X.