How is gauge pressure defined?

Understand the Problem

The question is asking for the definition of gauge pressure and provides several options to choose from. The goal is to determine which option correctly defines gauge pressure in relation to atmospheric pressure.

Answer

Gauge pressure is the pressure relative to atmospheric pressure.

Gauge pressure is the pressure measured relative to the ambient atmospheric pressure.

Answer for screen readers

Gauge pressure is the pressure measured relative to the ambient atmospheric pressure.

More Information

Gauge pressure can be positive or negative, depending on whether it is above or below atmospheric pressure.

Tips

A common mistake is confusing gauge pressure with absolute pressure, which includes atmospheric pressure.

Sources

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