Electrophysiology: Difference between revisions
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<math>I = V/R</math> | <math>I = V/R</math> | ||
<math>I</math> = current through the conductor (amperes) | |||
<math>V</math> = potential difference measured across the conductor (volts) | |||
<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 | |||
*Amps = Volts / Ohms | *Amps = Volts / Ohms | ||
Revision as of 22:37, 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