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Coulomb

The coulomb, also written as its abbreviation 'C', is the SI unit for electric charge. One coulomb is equal to the amount of charge from a current of one ampere flowing for one second.

One coulomb is equal to the charge on 6.241 x 1018 protons. The charge on 1 proton is 1.6 x 10-19 C. Conversely, the charge of an electron is -1.6 x 10-19 C.

A coulomb is an enormous charge - two 1 C charges that are 1 m apart exert a force of 9 x 109 newtons (see Coulomb's law). That's over two million tonnes, ~720x as much as the thrust of a space shuttle solid rocket booster during liftoff.[1]

To learn more about the coulomb, click here.

For Further Reading

For further information please see the related pages below:

  • Electric charge
  • Electric field
  • Electromagnetic force
  • Or explore a random page!

References

  1. ↑ http://www.wolframalpha.com/input/?i=newtons+to+pounds&f1=8.99E9&f=UnitsConversion2.fromValue_8.99E9
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