Electrical resistance
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Electrical resistance is a measure of how much a metal impedes the flow of electrons.[1]
The symbol used to represent electrical resistance is R, it's SI unit is the Ohm (Ω).
Resistance is defined as the potential difference divided by the current:
R = U/I
See Ohm's Law.
References
- ↑ http://www.answers.com/topic/electrical-resistance-1
- ↑ Wile, Dr. Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000