Question

In cathode ray tube ,From where the electrons comes which goes from cathode to anode

Answer 1

Cathode ray tube is the long glass tube, fitted with 2 metal electrodes at the end. The negative metal electrode is called Cathode which is source of electron in this tube and other one is called anode. When high voltage is applied across the electrodes, electrons come from the negatively charged metal surface (cathode) because of the attraction of positively charged electrode. It is also produced from the ionisation of gas by applying high electrical potential in cathode ray tube.