Is it ohmic? Plot it and see
Set the voltage across one component, read the current, record the point · R = V / I at every point · the supply limits the current to 0.60 A
Component and voltage
Current I
Resistance R = V/I
Points recorded
Current against voltage
Record points at several voltages for each component.
- Resistor: a straight line through the origin
- Lamp: the line bends as R rises
- Diode: current flows one way only