Physics (AS & A Level) · Oct / Nov 2025 · Paper 14 · Question 37
The circuit diagram shows a battery with internal resistance r, two resistors, a switch and a voltmeter. The switch is open. The switch is now closed. What happens to the current in the battery, and what happens to the reading on the voltmeter, when the switch is closed?
- Acurrent in battery: increases; reading on voltmeter: decreases
- Bcurrent in battery: increases; reading on voltmeter: remains the same
- Ccurrent in battery: remains the same; reading on voltmeter: decreases
- Dcurrent in battery: remains the same; reading on voltmeter: remains the same
As printed in the paper
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Correct answer: A. current in battery: increases; reading on voltmeter: decreases
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