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 behind this deflection ?
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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.
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be compass ground by on the field require of a electric circuit including a liquid units sold flex into element conduct electricity
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