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Physics (AS & A Level) · May / June 2019 · Paper 12 · Question 35

9702Practical circuits

A cell with internal resistance is connected to a variable resistor R as shown. The resistance of R is gradually decreased. How do the current I and the terminal potential difference across the cell change?

  1. Acurrent I decreases; terminal potential difference across cell decreases
  2. Bcurrent I decreases; terminal potential difference across cell increases
  3. Ccurrent I increases; terminal potential difference across cell decreases
  4. Dcurrent I increases; terminal potential difference across cell increases

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Correct answer: C. current I increases; terminal potential difference across cell decreases

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