Coulomb (unit): Difference between revisions
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The coulomb is a derived unit in the SI, equal to 1 [[ampere|A]]·[[second|s]]. | The coulomb is a derived unit in the SI, equal to 1 [[ampere|A]]·[[second|s]]. | ||
: C = A ⋅ s | |||
One coulomb is −6.241 509 647 ·10<sup>18</sup> times the charge ''e'' of an electron.<ref> | |||
One coulomb is −6. | 1 |e| = 1.602 176 487(40) × 10<sup>−19</sup> C from [http://physics.nist.gov/cgi-bin/cuu/Value?e|search_for=elementary+charge NIST]; value retrieved 8 July 2008</ref> | ||
==Sources== | ==Sources== | ||
*{{cite web|url=http://www.sizes.com/units/coulomb.htm|title=Coulomb|publisher=Sizes.com|date=2003-11-08|accessdate=2007-06-21}} | *{{cite web|url=http://www.sizes.com/units/coulomb.htm|title=Coulomb|publisher=Sizes.com|date=2003-11-08|accessdate=2007-06-21}} | ||
<references /> | |||
Revision as of 08:46, 8 July 2008
The coulomb, abbreviated C, is the SI unit of electric charge. It is defined as the amount of charge passing a point in one second in a circuit with one ampere of current.
The coulomb is named for Charles-Augustin de Coulomb (1736 - 1806), a French physicist who developed the law of electrostatic attraction and repulsion, named Coulomb's law in his honor.
The coulomb is a derived unit in the SI, equal to 1 A·s.
- C = A ⋅ s
One coulomb is −6.241 509 647 ·1018 times the charge e of an electron.[1]
Sources
- Coulomb. Sizes.com (2003-11-08). Retrieved on 2007-06-21.