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1.1 Units and quantities

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Question 4
F

A student uses a calculator to work out some answers.

The Table shows the calculator displays.

Table

QuantityCalculator display
speed in m/s\text{m/s}m/s12.68421
resistance in Ω\OmegaΩ47.0588
time in s\text{s}s0.0083912
a.

Give the speed to 2 significant figures.

[1]
b.

Give the resistance to 3 significant figures.

[1]
c.

Give the time in standard form, to 2 significant figures.

[2]
d.

The speed was calculated from a distance of 24.1 m and a time of 1.9 s.

Explain why the student should not give the speed as 12.68421 m/s.

[2]
Markscheme

1.1 Units and quantities Questions

  1. GCSE
  2. /Physics
  3. /1.1 Units and quantities

39 exam-style questions on Edexcel GCSE Physics 1.1 Units and quantities, covering 1.1.1 SI units for physical quantities and 1.1.2 Unit prefixes, conversions, significant figures and standard form. Each one has a worked solution and a mark scheme showing where the marks go.

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