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Which physical property explains the difference in ability of copper and rubber to transmit electricity?

Which physical property explains the difference in ability of copper and rubber to transmit electricity?
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3 votes
Which physical property explains the difference in ability of copper and rubber to transmit electricity?

User Akraf
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2 Answers

3 votes
copper has "free electrons" which, when moving, are electric currents. rubber does not have free electrons.
User Kevin TeslaCoil
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8.9k points
5 votes
the ability is that copper is a conductor and rubber is an insulator   
User Brnunes
by
8.2k points
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