A student wishes to determine the electrical resistance of a resistor. To do this, she needs to measure both the electric current flowing through the resistor and the potential difference across it. She has the resistor, a battery, and some connecting wires. What else does she need?
an ammeter and a voltmeter
an ammeter only
a voltmeter only
a force meter and a voltmeter
132 exam-style questions on CIE IGCSE Physics 4.2.4a Resistance. Each one has a worked solution and a mark scheme showing where the marks go.