Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format:
Specification Point 2.7 - Explain why a series or parallel circuit is more appropriate for particular applications, including domestic lighting.
Specification Point 2.8 - Understand how the current in a series circuit depends on the applied voltage and the number and nature of other components.
Specification Point 2.9 - Describe how current varies with voltage in wires, resistors, metal filament lamps and diodes, and how to investigate this experimentally.
Specification Point 2.10 - Describe the qualitative effect of changing resistance on the current in a circuit.
Specification Point 2.11 - Describe the qualitative variation of resistance of light-dependent resistors (LDRs) with illumination and thermistors with temperature.
Specification Point 2.12 - Know that lamps and LEDs can be used to indicate the presence of a current in a circuit.
Specification Point 2.13 - Know and use the relationship between voltage, current and resistance.
Complete set of Chapter 2 Lessons are available.
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