Q. 1

Electric conduction takes place in a discharge tube due to the movement of
A. positive ions

B. negative ions

C. electrons

D. protons

Answer :

Cathode ray which comprises of electrons is mainly responsible for electric conduction. But ions are also present in gases which play a role in conduction by getting ionized by colliding with electrons which are present in cathode rays. This process is called ionization which also contributes to electric conduction. Therefore, both positive and negative ions with electrons are responsible for conduction

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