Electric Charge

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…The unit used to measure amount of charge is the coulomb, named after the French physicist Charles Coulomb. One coulomb is a very large amount of charge. I.e. a strong lightning bolt carries 10-20 coulombs of charge between a cloud and earth. Most charge transfers in the static electricity experiments you do are much smaller. The spark that jumps between your finger and a doorknob carries only about 1 millionth of a coulomb of charge.