Question

AB is a current carrying conductor in the plane of paper as shown in the figure. What are the directions of the magnetic field produced by it at point P and Q? Give that R1>R2, where will the strength of the magnetic field be larger?

Answer 1

Applying the right hand thumb rule, the direction of magnetic field would be anti-clockwise around the direction of current. So, the magnetic field would be to point P and towards the plane of paper. At point Q, the direction of magnetic current would be from the conductor and away from the plane of paper. Since magnetic field is stronger near the conductor and weaker as we move away from the conductor, so the magnetic field would be stronger near point Q than near point P.

Answer 2

see the answer in the attachment given above

Explanation:

magneticmagnetic field at p is into the plane magnetic field at q is out of the plane hence be proportional to 1 upon r is greater than r2 and B2 is greater than b1