CAIE A-Level Physics AS P3.5 Graph Interpretation and Uncertainties Topic Practice

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Question 1

[Maximum number: 1]

A digital meter has an accuracy of ±1%\pm 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?

A

(3.06±0.02)A(3.06 \pm 0.02) \mathrm{A}

B

(3.06±0.04)A(3.06 \pm 0.04) \mathrm{A}

C

(3.06±0.05)A(3.06 \pm 0.05) \mathrm{A}

D

(3.06±0.07)A(3.06 \pm 0.07) \mathrm{A}

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