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Electrical resistance (view source)
Revision as of 01:29, September 5, 2007
, 01:29, September 5, 2007undeadening
Electrical resistance is a measure of how much a metal impedes the flow of electrons.<ref>http://www.answers.com/topic/electrical-resistance-1</ref>
Electrical resistance is a measure of how much a metal impedes the flow of [[electrons]].<ref>http://www.answers.com/topic/electrical-resistance-1</ref>
The symbol used to represent electrical resistance is R, it's SI unit is the Ohm (Ω).
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:
Resistance is defined as the [[potential difference]] divided by the [[current]]:
== R = U/I ==
== R = U/I ==