Resistor

Passive two-terminal device that dissipates Energy as heat, characterized by its Resistance.

Resistance (R)

Is the ability to oppose the flow of Current and dissipate Energy.

resistor.svg > invert

Units

Properties

  • Reciprocal of Conductance ()
  • Power dissipated by a resistor, derived from Ohm's Law, is
  • Total resistance in series is
  • Total resistance in parallel is

Physical Definition

  • Formed by a length of conducting wire

  • = Resistivity

  • = length

  • = cross-sectional area