Question

What is a cathode ?...........

Answer 1

A cathode is the electrode from which a conventional current leaves a polarized electrical device. A conventional current describes the direction in which positive electronic charges move.

Answer 2

Cathode rays are moving charged particles. One such particle is called electron. It is negatively charged particle and has a mass about 2000 times smaller than that of the hydrogen atom. The e/m ratio of electrons is independent of the nature of the material used. An electron is represented as e - .