Which unit is used to measure pressure?

The unit used to measure pressure is Pascals. Pressure is defined as the force applied per unit area. Thus, it can be expressed mathematically as pressure = force/area. The SI unit of force is the Newton, and the SI unit of area is the square meter. Therefore, when you divide Newtons by square meters, you get the unit of pressure, which is the Pascal (1 Pascal = 1 Newton/square meter). This relationship is fundamental in physics and helps explain various phenomena involving fluids and gases under different conditions.

Other options represent different physical quantities: square meters measure area, Joules measure energy, and Amperes measure electric current. Understanding these units clarifies their respective contexts and why Pascals are the correct choice when discussing pressure.