Physics (AS & A Level) · Oct / Nov 2021 · Paper 12 · Question 34
A battery of electromotive force (e.m.f.) 10 V and internal resistance 5.0 Ω is connected to a 5.0 Ω load resistor. Which change occurs when the 5.0 Ω load resistor is replaced with a 50 Ω load resistor?
- AThe current in the circuit increases.
- BThe potential difference across the load resistor increases.
- CThe power dissipated in the internal resistance of the battery increases.
- DThe total power dissipated in the circuit increases.
As printed in the paper
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Correct answer: B. The potential difference across the load resistor increases.
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