Question

An overhead power transmission line carries a current from east to west direction .Then magnetic field at a point 1.5 m north of the line is in
a) NORTH
b) SOUTH
c) vertically upward direction (outside the plane of paper )
d) vertically downward direction (inside the plane of paper


PLEASE EXPLAIN WITH REASON ELSE DON,T ANSWER ​

Answer 1

(d) vertically downward direction

apply right hand thumb rule ..

place your right thumb in the direction of current, direction of motion of other fingers gives the direction of field.