When free ends of conductivity tester are dipped into a solution the magnetic needle shows deflection?explain

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Solution

The deflection in the needle shows that there is current in the wounded wire of tester.
Solution has ions present in it causing electric current. Electric current produces magnetic effect causing deflection of the magnetic needle of a compass. Therefore, when a tester is dipped in the solution, the needle shows deflection, being a good conductor of electricity.

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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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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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