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Two infinitely long, thin, insulated, st...

Two infinitely long, thin, insulated, straight wires lie in the x-y plane along the x- and y- axis respectively. Each wire carries a current I, respectively in the positive x-direction and positive y-direction. The magnetic field will be zero at all points on the straight line:

A

`y=x`

B

`y=-x`

C

`y=x-1`

D

`y=-x+1`

Text Solution

Verified by Experts

The correct Answer is:
A
If a wire carries current along positive x-axis, then the magnetic field due to it along the line y=x in first quadrant is upwards. If a wire carries current along positive y-axis, then the magnetic filed due to it along the line y=x in first quadrant is zero.
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