Question

PQ is a current carrying conductor in the plane of the paper. Mention the direction of magnetic fields produced by it at points A and B. 

Given : r₁< r₂ , where will the strength of the magnetic field be larger ? Justify your answer in each case.

Answer 1

The strength of the magnetic field will be larger at A as the Strength of, the magnetic field decreases when the distance is increased. The direction of magnetic field Lines at A as well as B is anti-clockwise because field Lines are concentric circle and direction is determined by Right-hand thumb rule.