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 practical activity for this part of the course.

Key Words

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