A student sets up a circuit with a power supply, a resistor, and a voltmeter.
Where must the voltmeter be connected, and what does it measure?
in series with the resistor to measure the current through the resistor
in parallel with the resistor to measure the current through the resistor
in series with the resistor to measure the potential difference across the resistor
in parallel with the resistor to measure the potential difference across the resistor
452 exam-style questions on CIE IGCSE Physics 4.2 Electrical quantities, covering 4.2.1a Positive and negative charge, 4.2.1b Charging by friction and detecting charge, 4.2.1c Electrical conductors and insulators, 4.2.1d Electric fields and electric field patterns, 4.2.2a Electric current, charge and measuring current, 4.2.2b Conduction in metals and the direction of current, 4.2.2c Direct current and alternating current, 4.2.3a Electromotive force, 4.2.3b Potential difference and voltmeters, 4.2.4a Resistance, 4.2.4b Resistance of a metallic wire, 4.2.4c Current–voltage graphs, and 4.2.5 Electrical energy and electrical power. Each one has a worked solution and a mark scheme showing where the marks go.