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Physics (AS & A Level) · May / June 2022 · Paper 12 · Question 35

9702Practical circuits

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?

  1. Aa decrease in the charge of each charge carrier
  2. Ba decrease in the potential difference measured across the cell
  3. Can increase in the energy dissipated per unit time in the fixed resistor
  4. Dan increase in the number of charge carriers leaving the cell per unit time

As printed in the paper

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Correct answer: B. a decrease in the potential difference measured across the cell

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