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

Determine the temperature of a gas, The temperature of a gas is held consta...

The temperature of a gas is held constant whereas its volume is reduced.  The pressure the gas exerts on the walls of its container enhances because its molecules: a)  stri

Define elastic fatigue, It is the need of elastic strength of a substance w...

It is the need of elastic strength of a substance when subjected to repeated stresses and strain. If the substance is reserved undisturbed for some time, the previous properties ar

Optical activiy, what is the fresnel''s exlanation of optical activity

what is the fresnel''s exlanation of optical activity

What are the three particles that make up an atom, What are the three parti...

What are the three particles that make up an atom? Atoms are made up of electrons, protons, and neutrons. The protons and neutrons are found together in the core of the atom, k

Voltage signal: analog voltage signal, The signal which shows the continuou...

The signal which shows the continuous variation of voltage with time is called as analog voltage signal

Electricity, Derive expression for total power consumed when three applianc...

Derive expression for total power consumed when three appliances of power p1 p2 nd p3 are connected in series.

Determine the voltage resolution of converter, 1. A 12-bit analog-to-digita...

1. A 12-bit analog-to-digital converter (ADC) works over the range of -5 volts to + 5 volts.  (a) What is the voltage resolution of this converter?   (b) Assuming -5 V is rep

Describe dispersive power of a medium for a pair of colours, What do you me...

What do you mean by lateral shift produced by a parallel sided glass slab for grazing incidence of light? Describe dispersive power of a medium for a pair of colours.

Determine element that atomic weight is double atomic number, The atomic we...

The atomic weight of an element is double its atomic number. If there are four electrons in 2P  orbital, the element is : (1) C                       (2) N       (3) O

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