Electrophysiology: Difference between revisions
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==Ohms Law== | ==Ohms Law== | ||
Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. | [http://en.wikipedia.org/wiki/Ohm%27s_Law Ohm's law] states that the current through a conductor between two points is directly proportional to the potential difference across the two points. | ||
<math>I = V/R</math> | <math>I = V/R</math> | ||
<math>I</math> = current through the conductor (amperes) | *<math>I</math> = current through the conductor (amperes) | ||
<math>V</math> = potential difference measured across the conductor (volts) | *<math>V</math> = potential difference measured across the conductor (volts) | ||
<math>R</math> = resistance of the conductor (ohms) | *<math>R</math> = resistance of the conductor (ohms) | ||
More specifically, Ohm's law states that the R in this relation is constant, independent of the current | More specifically, Ohm's law states that the R in this relation is constant, independent of the current | ||
Revision as of 23:38, 28 May 2013
Ohms Law
Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points.
- = current through the conductor (amperes)
- = potential difference measured across the conductor (volts)
- = resistance of the conductor (ohms)
More specifically, Ohm's law states that the R in this relation is constant, independent of the current
- Amps = Volts / Ohms
- Amps = current flowing from (+) to (-)
- Volts = potential difference between (+) to (-)
- Ohms = resistence of the conductor
Ohm unit: when the difference between the (+) and (-) poles is 1.0 Volt,
X# Ohms of resistence are needed to conduct 1 Amp