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PHYSICS

JAMB 2015 - Question 3

Physics 2015 JAMB Past Questions - Question 3: The charge carriers in gases are

Choose the correct answers from the options given.

The charge carriers in gases are

A: ions only.

B: electrons and holes.

C: electrons only.

D: electrons and ions?

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Correct Answer

Explanation

The charge carriers in gases can be either positive or negative ions, or they can be free electrons. In the case of ionized gases, such as plasmas, the charge carriers are predominantly ions and electrons. In non-ionized gases, such as air, the charge carriers are primarily free electrons that are generated through processes like ionization or thermal excitation. These free electrons can move through the gas and carry an electric charge.