A cell has an electromotive force (e.m.f.) of 2.5 V.
How much energy is transferred by the cell when it drives 8.0 C of charge round a complete circuit?
3.2 J3.2\text{ J}3.2 J
3.2 W3.2\text{ W}3.2 W
20 J20\text{ J}20 J
20 W20\text{ W}20 W
55 exam-style questions on CIE IGCSE Physics 4.2.3a Electromotive force. Each one has a worked solution and a mark scheme showing where the marks go.