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Physics · May / June 2017 · Paper 12 · Question 34

5054Resistance

The readings of an ammeter and a voltmeter are used to calculate the resistance of resistor R. Which circuit shows the ammeter and voltmeter in the correct positions?

  1. ACircuit A: ammeter in parallel with R, voltmeter in series with the variable resistor
  2. BCircuit B: voltmeter across the battery, ammeter in series with the variable resistor
  3. CCircuit C: voltmeter in parallel with R, ammeter in series with the variable resistor
  4. DCircuit D: voltmeter in parallel with R, ammeter in series with the variable resistor

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Correct answer: C. Circuit C: voltmeter in parallel with R, ammeter in series with the variable resistor

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