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What are the factors that affect for deflection of cathode rays towards magnetic and electric field?
Wiki User
∙ 11y ago
The electron is a charged particle and can be attracted and repelled by a magnetic field.
In a CRT the magnetic field is generated by coils around the neck of the tube.
A voltage applied to the coils,will turn them into electromagnets.
The coils are supplied with a varying voltage from electronic circuits.
The waveform is usually a 'sawtooth', which rises slowly and then returns to '0' rapidly.
This will cause the electron beam to move across the screen and then return back to the beginning.
Two sets of coils are provided horizontally and vertically. This arrangement allows for the beam to scan across the screen, producing lines, moving progressively downward, making a field.
Wiki User
∙ 10y ago
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