WorksheetsPhysical Quantities and Measurements 1
Total questions: 10
Worksheet time: 9mins
Which definition is correct and uses only quantities rather than units?
Density is mass per cubic metre.
Potential energy is energy per unit current.
Pressure is force per unit area.
Speed is distance travelled per second.
For which quantity is the magnitude a reasonable estimate?
frequency of a radio wave 500 pHz
mass of an atom 500 µg
the Young modulus of a metal 500 kPa
wavelength of green light 500 nm
Which pair of quantities contains one vector and one scalar quantity?
displacement; force
kinetic energy; power
acceleration; momentum
velocity; distance
The diameter of a cylindrical metal rod is measured using a micrometer screw gauge. The diagram below shows an enlargement of the scale on the micrometer screw gauge when taking the measurement.
What is the cross-sectional area of the rod?
3.81 mm2
11.4 mm2
22.8 mm2
45.6 mm2
Which pair of units contains one derived unit and one SI base unit?
ampere coulomb
kilogram kelvin
metre second
newton pascal
What is equivalent to 2000 microvolts?
2 μJC−1
2 mV
2 pV
2000 mV
Which product-pair of metric prefixes has the greatest magnitude?
pico × mega
nano × kilo
micro × giga
milli × tera
A calibration graph is produced for a faulty ammeter.
Which ammeter reading will be nearest to the correct value?
0.2 A
0.4 A
0.6 A
0.8 A
A fixed quantity x0 is measured many times in an experiment that has experimental uncertainty. A graph is plotted to show the number n of times that a particular value x is obtained. Which graph could be obtained if the measurement of x0 has a large systematic error but a small random error?
Which list contains only scalar quantities?
area, length, displacement
kinetic energy, speed, power
potential energy, momentum, time
velocity, distance, temperature
