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Resistive load

Resistive load: current in phase with voltage

For resistive loads, the apparent power is always the active power, because the reactive power is zero.

The "resistive load" is a resistor that does not cause a phase shift between current and voltage.

The power factor is cos = 1 The electrical unit is Ohm Ω.

The effective resistance of a resistive load is always the same - regardless of whether AC or DC voltage is applied.

Typical ohmic loads are:

  • classic incandescent lamps
  • Heating coils
  • Oven
  • Stove tops
  • Soldering irons
  • Electric heaters