Resistors

Resistor

  • Remember: Resistance is measured on Ohms (Ω)
  • Resistors obey Ohm’s Law, V = IR
  •   – as applied voltage increases, current through the resistor increases proportionately
  • Resistors dissipate power as heat
  •      (P = I2R = V2 ÷ R)
  • Resistors have specific rated power dissipation
  •   – 0.25W, 0.5W, 1W, 2W, 5W ...
  • If exceeded component may fail!