In an electron gun the control grid is given a negative potential… - Vidyadip

MCQ

In an electron gun the control grid is given a negative potential relative to cathode in order to:

A
Decelerate electrons
B
Repel electrons and thus to control the number of electrons passing through it
C
To select electrons of same velocity and to converge them along the axis
D
To decrease the kinetic energy of electrons

✓

Answer

Repel electrons and thus to control the number of electrons passing through it

Explanation:

You must know the working of an electron gun.

In an electron gun the control grid is given a negative potential relative to cathode in order to repel electrons and thus to control the number of electrons passing through it.

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