Consider a piston-cylinder assembly where a piston moves a distance 'l' with cross-sectional area 'A', resulting in a volume change $ \Delta V $. If the external pressure is $ p_{ex} $, which of t

Question

Consider a piston-cylinder assembly where a piston moves a distance 'l' with cross-sectional area 'A', resulting in a volume change $ \Delta V $. If the external pressure is $ p_{ex} $, which of the following correctly describes the work done on the system during compression?

Accepted Answer

The work done is $ -p_{ex} \Delta V $ and is positive.

Answer

The work done is $ -p_{ex} \Delta V $ and is negative.

Answer

The work done is $ p_{ex} \Delta V $ and is positive.

Answer

The work done is $ p_{ex} \Delta V $ and is negative.

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