INDEX of notes on ELECTRICITY section 4 devices and their uses igcse/gcse 9-1 Physics revision notes for AQA Edexcel OCR GCSE GCSE exams

ELECTRICITY Section 4 Testing circuit devices and how are they used

e.g. thermistor, LDR, LED and diode

Sub-index for electricity section 4

1. Introduction - investigating a device with a simple testing circuit

2. What is an LDR? Uses of an LDR?

3. What is a thermistor? Uses? THERMISTOR

4. What is the function of a diode? Uses? DIODE

5. What is an LED? Uses of an LED? LED

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Electricity and magnetism revision notes index

1. Usefulness of electricity, safety, energy transfer, cost & power calculations, P = IV = I²R, E = Pt, E=IVt

2. Electrical circuits and how to draw them, circuit symbols, parallel circuits, series circuits explained

3. Ohm's Law, experimental investigations of resistance, I-V graphs, calculations V = IR, Q = It, E = QV

4. Circuit devices and how are they used? (e.g. thermistor and LDR), relevant graphs

5. More on series and parallel circuits, circuit diagrams, measurements and calculations

6. The 'National Grid' power supply, environmental issues, use of transformers

7. Comparison of methods of generating electricity

8. Static electricity and electric fields, uses and dangers of static electricity

9. Magnetism - magnetic materials - temporary (induced) and permanent magnets - uses

10. Electromagnetism, solenoid coils, uses of electromagnets

11. Motor effect of an electric current, electric motor, loudspeaker, Fleming's left-hand rule, F = BIL

12. Generator effect, applications e.g. generators generating electricity and microphone

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