When the free ends of a tester are dipped into a solution the magnetic needle shows deflection can you explain the reason

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Solution

The deflection of the compass needle shows that the current is flowing through the circuit. The circuit is complete since free end 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.

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

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Q. When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection.

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

When the free ends of a conductivity tester (made by using a battery connected to a wire wound around a compass) are dipped into a solution, the magnetic needle shows deflection. Can you give the reason for this deflection?

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