(a) Figure 14 shows the features of a cathode ray tube.

(i) Name the parts labeled A and B.
(ii) Explain how the electrons are produced in the tube.
(iii) State two functions of the anodes.
(iv) At what part of the cathode ray tube would the time be connected?
(v) Why is a vacuum created in the tube?

Answer:

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-plates

v)-To prevent ionisation of the air inside the tube

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