ELECTRICITY Section 1: Useful electrical appliances in the home, safety fuses and earthing, transferring electrical energy in the home

ALSO power and energy transfer calculations including P = IV = I²R = E/t, E = Pt = IVt and electricity cost calculations

Sub-index of notes on electricity in the home - uses and calculations

1.1 Definitions, descriptions, formulae, units in electrical science

1.2 The usefulness of electrical appliances in the home

1.3 The a.c. electricity supply to the home, wiring, insulation and plugs (more on safety in Part 1.5)

1.4 Power ratings of appliances in the home & rate of energy transfer

1.5 More on dangers of live wire, fuses & earthing appliances for safety

1.6 Power, energy transfer & electricity cost calculation questions (with worked out answers)

See also Electricity Section 3 for more on V = IR,  Q = It  and  E = QV electricity calculations

and Types of energy and stores - examples compared and explained

WHERE NEXT?

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 (= energy part 6)

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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