how can you test to check if a substance is a conductor or an insulator
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20
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We have to complete a circuit with the substance. We have to fix a lamp in the circuit. If lamp glows we know it is a a conductor or otherwise it is a insulator.
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34
Answer:
The simplest test is heat the the given substance (solid of any shape) on one end,after a while check the temperature on the other end. If it measures more than room temperature then the given substance is conductor of heat, then it conducts electricity also, otherwise it is electrically insulator .
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