In a triode,the cathode,grid,and plate are at | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The cathode is at $0 \, V$ and the grid is at $-2 \, V$. As the electron moves from the cathode to the grid,it experiences a retarding potential d

Vedclass · Accepted Answer

$83$

Vedclass · Answer

(D) The cathode is at $0 \, V$ and the grid is at $-2 \, V$. As the electron moves from the cathode to the grid,it experiences a retarding potential difference of $2 \, V$. Therefore,the loss in kinetic energy is $2 \, eV$. The kinetic energy of the electron after passing through the grid is $3 \, eV - 2 \, eV = 1 \, eV$. The potential difference between the plate $(80 \, V)$ and the grid $(-2 \, V)$ is $80 - (-2) = 82 \, V$. As the electron moves from the grid to the plate,it gains kinetic energy equal to the potential difference,which is $82 \, eV$. The final kinetic energy of the electron reaching the plate is $1 \, eV + 82 \, eV = 83 \, eV$.

In a triode,the cathode,grid,and plate are at potentials of $0 \, V$,$-2 \, V$,and $80 \, V$ respectively. Electrons are emitted from the cathode with an initial kinetic energy of $3 \, eV$. What is the energy of the electron when it reaches the plate in $eV$?

Similar Questions

The figure represents the variation of triode parameters ($\mu$, $r_p$, or $g_m$) with the plate current. The correct variations of $\mu$ and $r_p$ are given, respectively, by the curves:

$A$ triode has a mutual conductance of $2 \times 10^{-3} \text{ mho}$ and an amplification factor of $50$. The anode is connected through a resistance of $25 \times 10^3 \, \Omega$ to a $250 \, \text{V}$ supply. The voltage gain of this amplifier is

$A$ triode has a transconductance $(g_m)$ of $2.5 \text{ mA/V}$ and an anode resistance $(r_p)$ of $20 \text{ k}\Omega$. If it is used as an amplifier with an amplification factor of $10$, what is the load resistance $(R_L)$ connected to the plate circuit in $\text{k}\Omega$?

The voltage gain of a triode depends upon

In an amplifier,the load resistance ${R_L}$ is equal to the plate resistance ${r_p}$. The voltage amplification is equal to:

Vedclass Test Series

Exam Paper Generator

Online Exam Module