Q. 37 C5.0( 2 Votes )

Answer the following question:

Why should gases be insulators at ordinary pressures and start conducting at very low pressures?

Answer :

At atmospheric/ ordinary pressures the Ions of gases move randomly and collide with each other , this random motion prevents it from setting a definite current in given direction, at low pressures these random motions decrease and if a potential difference is created between two points the gaseous Ions are able to move in definite direction setting a current. Hence, the gases become conductor at very low pressures.


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