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Physics · May / June 2018 · Paper 12 · Question 38

5054Action and use of circuit components

The circuit diagram shows a variable resistor R connected in parallel to the lower half of a potential divider. The resistance of R increases. What happens to the two voltmeter readings?

  1. AV1 decreases, V2 decreases
  2. BV1 decreases, V2 increases
  3. CV1 increases, V2 decreases
  4. DV1 increases, V2 increases

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Correct answer: B. V1 decreases, V2 increases

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