Answer all the questions in the spaces provided. (a) State two SI base units other than kilogram, metre and second. 1. \_\_\_\_\_\_ 2. \_\_\_\_\_\_ (b) Determine the SI base units of resistivity. base units = \_\_\_\_\_\_ (i) A wire of cross-sectional area $1.5\ \text{mm}^2$ and length $2.5\ \text{m}$ has a resistance of $0.030\ \Omega$. Calculate the resistivity of the material of the wire in $\text{n}\Omega\text{m}$. resistivity = \_\_\_\_\_\_ $\text{n}\Omega\text{m}$ (ii)…

Physics 9702/22 — May/June 2017

Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme

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Topics Work, Energy and Power · Waves · Physical Quantities and Units · Electricity · Measurement Techniques · Kinematics · +5 more

Q1Physical Quantities and UnitsElectricityMeasurement TechniquesFree sample

Answer all the questions in the spaces provided.

(a)

State two SI base units other than kilogram, metre and second.

______
______

(b)

Determine the SI base units of resistivity.

base units = ______

(c)

(i)

A wire of cross-sectional area $1.5\ \text{mm}^2$ and length $2.5\ \text{m}$ has a resistance of $0.030\ \Omega$ .
Calculate the resistivity of the material of the wire in $\text{n}\Omega\text{m}$ .

resistivity = ______ $\text{n}\Omega\text{m}$

(ii)

State what is meant by precision.
Explain why the precision in the value of the resistivity is improved by using a micrometer screw gauge rather than a metre rule to measure the diameter of the wire.

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7 more questions

Q2Kinematics · Work, Energy and Power13M
Q3Deformation of Solids4M
Q4Dynamics · Work, Energy and Power4M
Q5Waves4M
Q6Superposition · Waves8M
Q7D.C. Circuits10M
Q8Particle Physics3M

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