Question

An electric current through a horizontal metal wire flowing from east to west direction, direction of magnetic field when the force is directed downward, is from

• A. east to west
• B. west to east
• C. north to south
• D. south to north

Answer 1

The correct option is D south to north

According to right-hand thumb rule, if we grasp the conductor in the palm of the right hand so that the thumb points in the direction of the flow of current, then the direction in which fingers curl gives the direction of magnetic field. Hence, it will be from south to north.