February/March 2026 Paper 12

2026 · 40 questions · 40 parts · 40 marks

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37Potential Dividers SensorsMedium1 mark
A battery of electromotive force (e.m.f.) 6.0 V and negligible internal resistance is connected in series with a resistor of resistance and a variable resistor of resistance from zero to . A voltmeter is connected across the variable resistor. The resistance of the variable resistor is changed.
circuit with a 6.0 V battery in series with a fixed 6.0 Ω resistor and a variable resistor of resistance 0–4.0 Ω, and a voltmeter connected across the variable resistor
What is the range of the voltmeter reading?