- Explain that resistance can remain constant or change as current changes for different components.
- Describe the linear relationship between current and potential difference for an ohmic conductor at constant temperature.
- Describe how the resistance of components such as lamps, diodes, thermistors, and LDRs changes with current, temperature, or light intensity.
- Explain the application of thermistors (e.g. thermostats) and LDRs (e.g. switching lights).
- Explain the design and use of circuits to measure resistance.
- Use graphs to explore linear and non-linear circuit elements.
- Investigate the I-V characteristics of circuit elements including a filament lamp, a diode, and a resistor.
