A-LevelPhysicsD.C. circuitsMay/June 2015Paper 1 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?
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
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