Question

When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?

Answer 1

The deflection of the compass needle indicates that current is flowing through the wire. When the free ends of the tester are immersed in the solution, the circuit is complete. As a result of the solution being a conducting solution, the compass needle is deflected.

The magnetic needle deflection indicates that electric current is passing via the wires.

Because the tester’s free ends are dipped in a solution, the circuit is complete.

In addition, the solution is an excellent electrical conductor. As a result, the magnetic needle deflects.