Question

9. A current through a horizontal power line flows from south to North
direction. The direction of magnetic field line above it is towards
(a) North
(b) South
(c) West
(d) East​

Answer 1

Answer:

In right hand rule, the thumb shows the direction of current and the folded Fingers shows the direction of magnetic field. Here, The direction of current is south to north so the direction of magnetic field is east. Hence, The direction of magnetic field line is east

Answer 2

answer:

I think the answer is north.

hope it will help you.