Heat supplied to the cathode by directing a current through a coil of wire is called
A. Electron gun
B. Electron beam
C. Filament
D. Anode and cathode
Answer:A
Heat supplied to the cathode by directing a current through a coil of wire is called
A. Electron gun B. Electron beam C. Filament D. Anode and cathode
Explanation: In CRT the filament is responsible for supply of power.