Physics · IGCSE · Cambridge · Cambridge IGCSE (9–1) Physics 0972 (Extended) (2026–2028) · Specification point · 4.2.2 · Electricity and magnetism · Electrical quantities
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4.2.2 Electric current
| Core | Supplement |
|---|---|
1 Know that electric current is related to the flow of charge 2 Describe the use of ammeters (analogue and digital) with different ranges 3 Describe electrical conduction in metals in terms of the movement of free electrons 4 Know the difference between direct current (d.c.) and alternating current (a.c.) | 5 Define electric current as the charge passing a point per unit time; recall and use the equation |
6 State that conventional current is from positive to negative and that the flow of free electrons is from negative to positive