Which one of the following devices is non-ohmic

GP Electricity

Which one of the following devices is non-ohmic?

  1. Conducting copper coil
  2. Electric heating coil
  3. Semi conductor diode
  4. Rheostat

Answer

Non-ohmic devices don’t follow ohm’s law. For example, LED, Filament, thermistor, diode, etc.

The correct option is C.