Physics 9702 · AS & A Level · Potential dividers

Potential dividers — practice question

PQR and XYZ are wires in a circuit. A galvanometer is connected between Q and Y to act as a null indicator. When the galvanometer shows zero, which statement is correct?

  • AThe potential difference between Q and Y is infinite.
  • BThe potential difference between Q and Y is zero.
  • CThe resistance between Q and Y is infinite.
  • DThe resistance between Q and Y is zero.

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