Physics (AS & A Level) · Oct / Nov 2022 · Paper 13 · Question 3
A digital meter is used to measure the current in an electric circuit. The reading on the meter fluctuates (varies) between 3.04 A and 3.08 A. The readings on the meter have an accuracy of ±1%. What is the true value of the current, with its uncertainty?
- A(3.06 ± 0.02) A
- B(3.06 ± 0.04) A
- C(3.06 ± 0.05) A
- 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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