(i)
A - grid,
B - Filament
(ii) The filament heats up the cathode, the electrons on the surface gain energy breaking away from the surface.
(iii)
- To accelerate the electron
- To focus the electrons towards the screen
(iv) Across x- plate
(v) to reduce collision with air molecules that could lead to ionization.
johnmulu answered the question on June 5, 2017 at 13:50
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