In this video, we’ll look at how the current through a component depends on the potential difference which is applied across it.  For some types of components, the current is proportional to the applied potential difference; we call these ohmic conductors.  For other components, the behaviour is more complicated.  This video ends with an overview of the required practical activity for this part of the course.

Key Words

resistor, current-voltage characteristic, thermistor, LDR, current, potential difference, Ohm's law, ohmic, ohmic conductor, resistance, wire, required practical, filament lamp, diode, I-V characteristic