Question

Will the mass or charge on the electron change if:
a)The potential difference in the discharge tube is increased.
b)the pressure of gas in the discharge tube is decreased.
c)the nature of the gas in the discharge tube is changed

Answer 1

1. No physical parameter change will be able to effect the charge on an electron and mass of electron.
2. This is because,an electron is a fundamental unit of atom and it's properties cannot be changed.