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

Electric charges, A charge Q is to be distributed between the objects . wha...

A charge Q is to be distributed between the objects . what should be the magnitude of the charge on the object so that positive force between the object is maximum?

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.

Spectrum, Example of an impure spectrum

Example of an impure spectrum

Electric potential, is the surface of a conductor is equipotential

is the surface of a conductor is equipotential

Constant negative velocity, Constant Negative Velocity Observe in which...

Constant Negative Velocity Observe in which the object below moves along with a constant velocity within the negative direction. The dot diagram displays in which each consecut

Find the period of rotation of the rod, The record for the highest speed ac...

The record for the highest speed achieved in laboratory for a uniformly rotating object was 2.01*10^3 m/s for a0.15-m long carbon rod. What was the period of rotation of the rod?

Is it is possible to have charge of 7.2*10^-19 c?, No;(Personal Note:Please...

No;(Personal Note:Please Rate this and let me know if this helps) Reason: From the quantisation of charge charactersistic, we can say that charge comes in integral multiple of e (

the two types of currents, A battery and the plug points in the switch boa...

A battery and the plug points in the switch boards home give potential difference. What is the disimilar in the nature of the  current given by the two? Compare and contrast the tw

Define isochoric cooling and isobaric expansion, Define Isochoric Cooling a...

Define Isochoric Cooling and Isobaric Expansion? An ideal gas of total mass and molecular weight μ is isochorically (at constant volume) cooled to a pressure n times smaller th

Digital electronics: binary system, (i) A number system which has only two ...

(i) A number system which has only two characters i.e. 0 (Low value) and 1 (High value) is known as binary system (ii) The electrical circuit which operates only in these two di

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