Physics 9702 · AS & A Level · Practical circuits

Practical circuits — practice question

A power supply with electromotive force (e.m.f.) $50\,\text{V}$ and negligible internal resistance is connected in series with resistors of resistance $100\,\Omega$ and $5\,\Omega$, as illustrated. A voltmeter is used to measure the potential difference (p.d.) across the $5\,\Omega$ resistor, and an ammeter is used to measure the current in the circuit. Which ranges would be appropriate for the ammeter and for the voltmeter?

  • Aammeter range $0$-$0.1\,\text{A}$, voltmeter range $0$-$1\,\text{V}$
  • Bammeter range $0$-$0.1\,\text{A}$, voltmeter range $0$-$3\,\text{V}$
  • Cammeter range $0$-$1.0\,\text{A}$, voltmeter range $0$-$1\,\text{V}$
  • Dammeter range $0$-$1.0\,\text{A}$, voltmeter range $0$-$3\,\text{V}$

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