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Physics (AS & A Level) · Oct / Nov 2018 · Paper 11 · Question 5

9702Errors and uncertainties

A digital meter has an accuracy of ±1%. The meter is used to measure the current in an electrical circuit. The reading on the meter varies between 3.04 A and 3.08 A. What is the value of the current, with its uncertainty?

  1. A(3.06 ± 0.02) A
  2. B(3.06 ± 0.04) A
  3. C(3.06 ± 0.05) A
  4. D(3.06 ± 0.07) A

As printed in the paper

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Correct answer: C. (3.06 ± 0.05) A

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