Valve & digital electronics: thermionic emission, Physics

Assignment Help:

(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current flowing is known as thermion current.

(ii)Thermions have dissimilar velocities.

(iii)This was discovered by Edison

 


Related Discussions:- Valve & digital electronics: thermionic emission

Explain width of principal maxima and intensity, Two grating A and B have t...

Two grating A and B have the same width of the ruled surface but A has greater number of lines. Giving reasons compare in two cases (a) Intensity (b) Width of principal maxim

What is the mass of the merry-go-round, A merry-go-round in the park has a...

A merry-go-round in the park has a radius of 2.6 m and a moment of inertia of  1773 kg.m 2 What is the mass of the  merry-go-round?

Scanning, Scanning is process of dividing an image on the screen into a lar...

Scanning is process of dividing an image on the screen into a large number of very small squares formed by sets of horizontal and vertical straight lines.   Iconoscope i

Determine period of a pendulum, As a pendulum is raised to higher altitudes...

As a pendulum is raised to higher altitudes, its period: a) Increases b) Decreases c) Remains the same d) Decreases, and then remains the same Ans: When

Function of photodetectors in fibre optic communication, Define the functio...

Define the function of photodetectors in fibre optic communication system. Photo-detectors: At the receiver end, conversion of optical signal into analog signal is being don

The conservation of linear momentum, Hi, Good day. I enjoy watching your ph...

Hi, Good day. I enjoy watching your physics videos, but I have a question and was wondering if you can answer it for me showing the working. the question is as follows: A flat truc

Magnifying glass, Magnifying Glass: A biconvex lens of short focal leng...

Magnifying Glass: A biconvex lens of short focal length and low power which forms a virtual and magnified image of an object placed with its focal length is known as magnifying

Nucleons together in a nucleus, What does held nucleons together in a nucle...

What does held nucleons together in a nucleus? Nuclear force. It is the nuclear force which fasten the nucleons together and is responsible for the stability of nucleus.

Which atomic model did erwin schrodinger create, Which atomic model did Erw...

Which atomic model did Erwin Schrodinger create? Schrodinger's wave equation was based on the Heisenberg uncertainty principal that the position and velocity of an electron can

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd