What term refers to the SI unit of pressure?

What term refers to the SI unit of pressure?

• A. Pascal
• B. Bar
• C. Newton
• D. Psi

Answer: (A)

Pressure is measured as force per area, and the SI unit for that is the pascal. One pascal equals one newton of force per square meter (Pa = N/m^2). Since a newton is a unit of force, the pascal directly expresses pressure in the SI system. In practice, you’ll often see kilopascals (kPa) used, where 1 kPa = 1000 Pa. Other units like bar and psi exist, but they are not SI (bar is 100 kPa, and psi is pounds-force per square inch). A Newton by itself is a unit of force, not pressure.

Pressure is measured as force per area, and the SI unit for that is the pascal. One pascal equals one newton of force per square meter (Pa = N/m^2). Since a newton is a unit of force, the pascal directly expresses pressure in the SI system. In practice, you’ll often see kilopascals (kPa) used, where 1 kPa = 1000 Pa. Other units like bar and psi exist, but they are not SI (bar is 100 kPa, and psi is pounds-force per square inch). A Newton by itself is a unit of force, not pressure.