Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

A student records the current and the potential difference across a resistor in a circuit. current $= (50.00 \pm 0.01)\,\text{mA}$ potential difference $= (500.0 \pm 0.1)\,\text{mV}$ These readings are then used to find the resistance of the resistor. Determine the percentage uncertainty in the resistance value calculated.

  • A$0.0002\%$
  • B$0.0004\%$
  • C$0.02\%$
  • D$0.04\%$

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