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Physics (AS & A Level) · Feb / March 2016 · Paper 12 · Question 5

9702Potential dividers

PQR and XYZ are wires in a circuit. A galvanometer connects Q and Y as a null indicator. When the galvanometer reads zero, which statement is correct?

  1. AThe potential difference between Q and Y is infinite.
  2. BThe potential difference between Q and Y is zero.
  3. CThe resistance between Q and Y is infinite.
  4. DThe resistance between Q and Y is zero.

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Correct answer: B. The potential difference between Q and Y is zero.

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