Question

give reason why magnetic needle connected in a tester circuit shows deflection when the free ends of tester are dipped into a solution

Answer 1

the free ends of a tester dipped into solution the magnetic needle shows deflection this is due to the passage of electric current through the circuit when electric current passes through security Compass shows deflection as the liquid is a good conductor of electricity

Answer 2

Answer:

The deflection in the compass needle shows that current is flowing through the wounded wire and hence, through the circuit. The circuit is complete since free ends of the tester are dipped in a solution. The solution is certainly a conducting solution. This is the reason why the compass needle shows a deflection.