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Line 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]]: + − + − − − See [[Ohm's Law]]. − − <ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> Line 15:
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rework
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 substance impedes the flow of [[electrons]].<ref>http://www.answers.com/topic/electrical-resistance-1</ref> Resistance is represented with the symbol ''R'', it's [[SI]] unit is the [[Ohm]] (Ω).
Resistance is in a circuit can be calculated by the [[voltage]] divided by the [[current]] (R = V / I).
==See Also==
*[[Ohm's Law]]
== R = U/I ==
==References==
==References==
==Links==
==Links==
*[http://www.allaboutcircuits.com/vol_1/chpt_2/1.html How voltage, current, and resistance relate]
*[http://www.allaboutcircuits.com/vol_1/chpt_2/1.html How voltage, current, and resistance relate]
[[category:electronics]]
[[category:electronics]]