Physics (AS & A Level) · Oct / Nov 2025 · Paper 13 · Question 35
The diagram shows a circuit with a battery connected to a resistor R. The battery has an internal resistance represented by resistor r. A second resistor, identical to R, is connected in parallel with R. Which row describes the changes to the potential difference (p.d.) across r and the current shown on the ammeter when the second resistor is connected?
- Adecreases / decreases
- Bdecreases / increases
- Cincreases / decreases
- Dincreases / increases
As printed in the paper
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Correct answer: D. increases / increases
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