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

Work and energy, calculate the work required to be done to stop a car of 15...

calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

Explain ammeter, Ammeter: An electromechanical instrument which is used...

Ammeter: An electromechanical instrument which is used to calculate the amount of current flowing by an electric circuit is known as an ammeter. It is modified form of a gal

With which p-type germanium should be doped, In order to obtain p-type germ...

In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity.      (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will d

What is the magnetic pole at the end of the paper clip, A magnet is used to...

A magnet is used to collect some spilled paper clips. What is the magnetic pole at the end of the paper clip that is indicated in the figure

Where does the ray depart from there, Question: A person is doing effor...

Question: A person is doing effort to locate the image of an object of a plane mirror by means of a ray-tracing diagram. The person draws a ray by the object which strikes the

Electromagnetic induction, self induction of a coil depends by observing th...

self induction of a coil depends by observing the effect of coil when put in series

Basic concepts of electromagnetic spectrum, Basic concepts of electromagnet...

Basic concepts of electromagnetic spectrum: BASIC CONCEPTS 1. When Sun light falls on a prism, the transmitted light produces a sequence of colours called 'Spectrum'. 2

What is colour of the shortest wavelength observable light, Question: ...

Question: What is the colour of the shortest wavelength observable light? Answer: Keeping in mind the actuality that the higher the frequency the shorter the waveleng

Can you explain modulation, Can you explain modulation? Why is it required...

Can you explain modulation? Why is it required? What is "World Wide Web" (WWW)? Give the frequency range of speech signals.

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