Answer: 3%.
- A 3%
- B 1%
- C 2%
- D 6%
Correct answer: A. 3%
Explanation: V = a³, so the percentage error triples: 3 × 1% = 3%.
The 7 SI base units. All derived units (newton, joule, watt, volt, etc.) can be expressed as combinations of these 7 fundamental units raised to various powers.
Concept context
SI base units, dimensional analysis, significant figures, and error propagation. The toolkit every physics calculation relies on.