SI unit of charge is _.
Correct answer: C. Coulomb
- A. Ampere
- B. Volt
- C. Coulomb
- D. Calorie
Explanation
The correct answer is Coulomb, which is the SI unit used to measure electric charge. The other options are units for different physical quantities: Ampere for electric current, Volt for electrical potential difference, and Calorie for energy.
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Physical quantities combine a numerical value with a unit, and are expressed using SI base units or derived units such as newtons, joules and pascals. The topic covers prefixes, unit conversion, dimensional analysis, significant figures and measurement uncertainty, while distinguishing scalar quantities from vectors where direction matters.
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