Which term is used for pressure in the metric system?

Which term is used for pressure in the metric system?

• A. Kilopascal
• B. Bar
• C. Psi
• D. Torr

Answer: (A)

In the metric system, the pressure unit used is the pascal, the SI unit, which is defined as one newton per square meter. In practice, kilopascals are used because they fit the typical pressure ranges we deal with. One bar is also a metric unit, but it’s not part of the SI (1 bar equals 100 kilopascals). Psi and Torr come from non-metric systems (psi is pounds per square inch; Torr is based on millimeters of mercury). So the term most associated with the metric system for pressure is kilopascal.

In the metric system, the pressure unit used is the pascal, the SI unit, which is defined as one newton per square meter. In practice, kilopascals are used because they fit the typical pressure ranges we deal with. One bar is also a metric unit, but it’s not part of the SI (1 bar equals 100 kilopascals). Psi and Torr come from non-metric systems (psi is pounds per square inch; Torr is based on millimeters of mercury). So the term most associated with the metric system for pressure is kilopascal.