Glow in discharge tube is due to

The current conduction in a discharged tube is due to

The current conduction in a discharged tube is due to

Ionization in discharge tube us due to collision of ……..gas filled in tube.

Electric conduction takes place in a discharge tube due to the movement of

Electric conduction takes place in a discharge tube due to the movement of

Colour in discharge tube filled with gas at low pressure is due to …

A modified discharge tube is used as ________.

An electric current of 20 mu A appears in a discharege tube if the discharge current is due to flow of equal number of electrons and protons then how many electrons flow across a cross-section of the tube in 2 minutes