Card 1 of 24
What is the difference between a physical quantity and a unit?
A
- Physical quantity: the standard used for a measurement (e.g. m/s).
- Unit: something that can be measured (e.g. speed).
B
- Physical quantity: the instrument used to take a measurement (e.g. speedometer).
- Unit: the numerical result of the measurement (e.g. 20).
C
- Physical quantity: an equation used in a calculation (e.g. speed = distance/time).
- Unit: the symbol used for the quantity (e.g. v).
D
- Physical quantity: something that can be measured (e.g. speed).
- Unit: the standard used to measure it (e.g. m/s).
Card 1 of 24
Units Flashcards
24 flashcards on Edexcel IGCSE Physics Units: the key terms, formulae and methods you need to recall for Paper 1 and Paper 2.