alleryStart learning →What is the SI unit of pressure?
AThe joule
BThe newton
CThe pascal
DThe watt
Answer & Solution
Correct answer: C. The pascal
1. Pressure is a distinct quantity from energy or power.
2. The SI unit for pressure is named the pascal.
3. The joule measures energy and the watt measures power, neither of which is pressure.
4. The newton measures force, which is only part of the definition of pressure, not the unit of pressure itself.
5. So the pascal is correct.
_Source: OpenStax Physics (CC BY 4.0), Ch 12 "Thermodynamics", section 12.2 First law of Thermodynamics: Thermal Energy and Work_
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