Physics (Combined Science) · GCSE · AQA · AQA GCSE Combined Science: Trilogy (8464) — Physics — Foundation · Specification point · 6.2.1.3 · Electricity · Current, potential difference and resistance
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6.2.1.3 Current, resistance and potential difference
| Content | Key opportunities for skills development |
|---|---|
The current (I) through a component depends on both the resistance (R) of the component and the potential difference (V) across the component. The greater the resistance of the component the smaller the current for a given potential difference (pd) across the component. Questions will be set using the term potential difference. Students will gain credit for the correct use of either potential difference or voltage. | |
Current, potential difference or resistance can be calculated using the equation: |
potential difference, V, in volts, V
current, I, in amperes, A (amp is acceptable for ampere)
resistance, R, in ohms, Ω
MS 3b, c Students should be able to recall and apply this equation. |
Required practical activity 15: use circuit diagrams to set up and check appropriate circuits to investigate the factors affecting the resistance of electrical circuits. This should include:
AT skills covered by this practical activity: physics AT 1, 6 and 7.
This practical activity also provides opportunities to develop WS and MS. Details of all skills are given in Key opportunities for skills development (page 185).