In an electron gun,the control grid is given | vedclass

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(B) The control grid in an electron gun is maintained at a negative potential with respect to the cathode. Since electrons are negatively charged,this

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

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(B) The control grid in an electron gun is maintained at a negative potential with respect to the cathode. Since electrons are negatively charged,this negative potential creates an electric field that opposes the motion of electrons. By adjusting the magnitude of this negative potential,the grid can repel a portion of the electrons back toward the cathode. Consequently,this mechanism allows for the precise control of the number of electrons (beam intensity) that pass through the aperture of the grid.

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

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