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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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asked Nov 13, 2017 in Physics by jisu zahaan (28,760 points) ● 26 ● 377 ● 818

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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answered Nov 13, 2017 by sforrest072 (157,439 points) ● 61 ● 410 ● 949

Electric current produces magnetic effect which causes deflection of the magnetic needle of a compass. So, when the free ends of a tester are dipped into a solution which is a good conductor of electricity, the needle shows deflection.

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