The well-cleaned two ends of the wire of a continuity tester are dipped in a liquid that has been put in a
clean beaker. The bulb of the continuity tester would glow brighter when the liquid in the beaker is
(copper sulphate/acetic acid/vegetable oil).
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It will glow more brighter when testers are put on copper sulphate solution as it contains more minerals which will help in continuation of electricity
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