Physics - Magnetism Question with Solution | TestHub

Paragraph: The figure shows a circular loop of radius $a$ with two long parallel wires (numbered $1$ and $2$ ) all in the plane of the paper. The distance of each wire from the centre of the loop is $d$. The loop and the wires are carrying the same current $I$. The current in the loop is in the counterclockwise direction if seen from above.

Question: When $d\approx a$ but wires are not touching the loop, it is found that the net magnetic field on the axis of the loop is zero at a height $h$ above the loop. In that case