Physics (Combined Science) · GCSE · AQA · AQA GCSE Combined Science: Trilogy (8464) — Physics — Foundation · Specification point · 6.2.1.2 · Electricity · Current, potential difference and resistance
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6.2.1.2 Electrical charge and current
| Content | Key opportunities for skills development |
|---|---|
For electrical charge to flow through a closed circuit the circuit must include a source of potential difference. | |
Electric current is a flow of electrical charge. The size of the electric current is the rate of flow of electrical charge. Charge flow, current and time are linked by the equation: |
charge flow, Q, in coulombs, C
current, I, in amperes, A (amp is acceptable for ampere)
time, t, in seconds, s
A current has the same value at any point in a single closed loop.
MS 3b, c Students should be able to recall and apply this equation. |