A) ammeter
B) grid
C) cathode
D) anode
Correct Answer: B
Solution :
Triode valve consists of a long evacuated glass bulb. The bulb has three electrodes anode, cathode and grid (G). The grid controls the current in the plate circuit. When it is given a positive potential relative to the cathode, it helps the electrons in reaching the plate, so that more electrons reach the plate. Contrary to this when grid is given a negative potential it opposes the electron movement. Hence, grid is also called controlling device.You need to login to perform this action.
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