When the free ends of a tester are dipped into a solution, the magnetic needle shows
deflection. Can you explain the reason?
Answer
When free ends of a tester is dipped in the solution, the solution conducts electricity as it is a good conductor of electricity.
So, the circuit is now complete. Hence, electricity passes through the wire.
Now, we know that electric current produces magnetic effect.
Therefore, magnetic needle shows deflection
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