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JAMB Physics 2005 Question 3

Question 3

Conduction through Liquids and Gases

The charge carriers in gases are

  1. A.ions only.
  2. B.electrons and holes.
  3. C.electrons only.
  4. D.electrons and ions.
Show the answer and explanation

Answer: D (electrons and ions.)

Explanation

When a gas conducts, its atoms are ionised into positive ions and free electrons, and both carry the current.