Question

The magnetic needle deflected in opposite direction on interchanging the terminals of battery due to :
a. increase in current b. Decrease in current
c. change in direction of current d. Increase in distance between needle and battery ​

Answer 1

Explanation:

It the current is increased in the conductor the deflection of the compass needle increases. This is because the strength of magnetic field varies directly as the magnitude of the electric current, or the current passing through the wire.