Ohm’s Law
- Page ID
- 77484
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In 1827, Georg Ohm published his work Die galvanische Kette mathematisch bearbeitet, indicating that the current flowing through a conductor is proportional to the voltage across the conductor. All conductors of electricity obey Ohm’s Law, which is mathematically expressed as:
\[\mathrm{R = \dfrac{V}{I}}\]
- V = Voltage across the conductor (in Volts, V)
- I = Current through the conductor (in Amperes, A)
- R = Resistance of the conductor (in Ohms, Ω)
Simple applets to test out Ohm’s Law:
- http://micro.magnet.fsu.edu/electromag/java/ohmslaw/
- http://phet.colorado.edu/simulations/veqir/VeqIRColored.swf
- www.walter-fendt.de/ph14e/ohmslaw.htm