A-LevelPhysicsD.C. circuits9702/12 · May/June 2015 · Q51 Mark
A power supply of electromotive force (e.m.f.) 50V and negligible internal resistance is connected in series with resistors of resistance 100Ω and 5Ω, as shown. [Figure showing circuit with 50V source, 100Ω resistor, 5Ω resistor, a voltmeter across the 5Ω resistor, and an ammeter in series with the 100Ω resistor.] A voltmeter measures the potential difference (p.d.) across the 5Ω resistor and an ammeter measures the current in the circuit. What are suitable ranges for the ammeter and for the voltmeter?
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Aammeter range/A: 0–0.1, voltmeter range/V: 0–1
Bammeter range/A: 0–0.1, voltmeter range/V: 0–3
Cammeter range/A: 0–1.0, voltmeter range/V: 0–1
Dammeter range/A: 0–1.0, voltmeter range/V: 0–3
✓ Correct answer
D: ammeter range/A: 0–1.0, voltmeter range/V: 0–3
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