ABCDEFGH is a hollow cube made of an insulator. Face ABCD has a static positive charge distributed on it. Inside the cube, we have ionized hydrogen gas. Why does the usual kinetic theory expression for pressure become invalid in this situation?

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Physics · Kinetic Theory of Gases

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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The ions experience electrostatic forces due to the charged face in addition to wall collisions.

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Answer 1

The mean free path of the ions becomes larger than the dimensions of the cube.

Answer 2

The total number of particles varies inside the container over time.

Answer 3

The ions experience electrostatic forces due to the charged face in addition to wall collisions.

Answer 4

The collisions of ions with the walls of the cube would no longer be elastic.

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