why mica is good conductor heat but bad conductor electricity
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Answer: Free electron carry heat and electricity. Therefore, thermal conductivity is directly proportional electrical conductivity. So mica has good thermal conductivity due to phonons, but doesn't have sufficient free electrons to be a good conductor of electricity. That's why it is a good conductor of heat and bad conductor of electricity.
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Explanation:
Its true, that mica is a good conductor of heat but a bad conductor of electricity, mica heats the iron's base but not give electric shock. That's why it is use in electric iron.
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