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Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 37

9702Potential dividers

In the circuit shown, the ammeter reading is zero. What is the resistance of resistor R?

  1. A100 Ω
  2. B200 Ω
  3. C400 Ω
  4. D600 Ω

As printed in the paper

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Correct answer: C. 400 Ω

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