Physics 9702 · AS & A Level · Potential difference and power

Potential difference and power — practice question

A voltmeter indicates $9.000\,\text{V}$ when it is placed across the battery terminals. If a resistor of resistance $11.0\,\Omega$ is then connected in parallel with the battery, the voltmeter reading becomes $8.800\,\text{V}$. What internal resistance does the battery have?

  • A$0.244\,\Omega$
  • B$0.250\,\Omega$
  • C$10.8\,\Omega$
  • D$11.3\,\Omega$

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