A-LevelPhysicsD.C. circuits9702/12 · May/June 2022 · Q351 Mark

A cell with constant electromotive force (e.m.f.) is connected across a fixed resistor. Over time, the internal resistance of the cell increases. Which change occurs as the internal resistance of the cell increases?

Adecrease in the charge of each charge carrier

Bdecrease in the potential difference measured across the cell

Can increase in the energy dissipated per unit time in the fixed resistor

Dan increase in the number of charge carriers leaving the cell per unit time

✓ Correct answer

B: decrease in the potential difference measured across the cell

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Topic: D.C. circuits, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2022 Paper 1 Variant 2, question 35.

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