A power supply of electromotive force (e.m.f.) 18 V is connected across a 5 Ω resistor. Which ammeter is most suitable to measure the current in the resistor?
an ammeter with a range 0–1 A0\text{--}1\text{ A}0–1 A
an ammeter with a range 0–3 A0\text{--}3\text{ A}0–3 A
an ammeter with a range 0–5 A0\text{--}5\text{ A}0–5 A
an ammeter with a range 0–50 A0\text{--}50\text{ A}0–50 A
51 exam-style questions on CIE IGCSE Physics 4.2.2a Electric current, charge and measuring current. Each one has a worked solution and a mark scheme showing where the marks go.