Electronic Devices Question 183
Question: Due to S.C.R in vacuum tube
[RPET 2000]
Options:
A) $ I _{p}\to $ Decrease
B) $ I _{p}- $ Increase
C) $ V _{p}= $ Increase
D) $ V _{g}= $ Increase
Show Answer
Answer:
Correct Answer: A
Solution:
In SCR (Space charge region) electrons collect around the plate, this cloud decreases the emission of electrons from the cathode, hence plate current decreases.
