Sub-Atomic Particles –Electrons

The video explains how gases conduct electricity under high potential difference and reduced pressure using a discharge tube. It describes the effects of varying pressure on the tube, leading to the discovery of cathode rays. JJ Thomson's experiments revealed that cathode rays are negatively charged particles, later identified as electrons. Thomson measured the charge-to-mass ratio of electrons, while Millikan's oil drop experiment determined the electron's charge. These findings helped establish the fundamental properties of electrons.

What is the function of a vacuum pump in a discharge tube?

Describe the behavior of cathode rays when an electric field is applied.

How do cathode rays interact with matter, and what does this indicate?

What did JJ Thomson conclude about the nature of cathode rays?

What was the charge to mass ratio of an electron found by JJ Thomson?

What factors affect the deflection of electrons in electric and magnetic fields?

Explain the significance of Millikan's oil drop experiment.