1
Current as charge flow
Use current as charge per unit time and identify ampere as its unit.
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Electricity
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2
Use Q = It
Solve simple numerical problems using charge, current and time.
3
Voltage meaning
Explain potential difference as work done per unit charge.
4
Connect meters correctly
Identify series connection for ammeter and parallel connection for voltmeter.
5
Understand Ohm’s law
Relate potential difference and current at constant temperature.
6
Find resistance
Use V = IR in simple numerical problems.
7
Read V-I graphs
Use slope or graph shape to infer resistance and ohmic behaviour.
8
What changes resistance?
Relate resistance to length, area, material and temperature.
9
Use resistivity formula
Apply R = rho L/A in simple numerical contexts.
10
Classify by resistance
Use resistivity and resistance behaviour to classify materials.
11
Series resistance
Find total resistance for resistors connected end to end.
12
Parallel resistance
Find total resistance for resistors connected across common points.
13
Series circuit behaviour
Determine how current and voltage are distributed in series.
14
Parallel circuit behaviour
Determine how current and voltage are distributed in parallel.
15
Household circuit choice
Explain why household appliances are connected in parallel.
16
Solve resistor circuit problems
Combine Ohm’s law with equivalent resistance calculations.
17
Why wires heat up
Relate heat produced to current, resistance and time.
18
Use Joule heating formula
Solve problems using H = I^2Rt and related forms.
19
Heating effect uses
Connect heating effect to electric iron, heater, toaster and fuse.
20
Calculate electric power
Use P = VI, P = I^2R and P = V^2/R appropriately.
21
Calculate electricity use
Find energy used and connect it to household electricity bills.
22
Electrical safety choices
Use current, power and voltage ratings to make simple safety decisions.
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