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

Alpha particles are nuclei of which element, Alpha particles are nuclei of:...

Alpha particles are nuclei of: a) Hydrogen b) Helium c) Oxygen d) Nitrogen Ans: Alpha particles are nuclei of helium.

#heat transfer, #what are the condition necessary for heat transfer to occu...

#what are the condition necessary for heat transfer to occur?

Explain nuclear reactor, Nuclear Reactor: During fission large amount o...

Nuclear Reactor: During fission large amount of energy is free in the form of heat. A system, which is used to get controlled amount of heat energy from nuclear fission is know

Brass, Brass: When copper is alloyed zinc (60% copper, 40% zinc) is called...

Brass: When copper is alloyed zinc (60% copper, 40% zinc) is called brass. It is widely used as a current carrying and structural material in switches and plugs etc. Propertie

Displacement, How do you calculate the initial velocity?

How do you calculate the initial velocity?

Motion, when a body is thrown upwards, its velocity becomes zero at the hig...

when a body is thrown upwards, its velocity becomes zero at the highest point. what will be its acceleration at this point?

Fundamental units of kelvin and mole, Kelvin : Kelvin is the fundamental un...

Kelvin : Kelvin is the fundamental unit of temperature. It has quantity of zero where the molecular activity of gases ceases. Mole : Mole is the fundamental unit of quantity of

Expression for the intensity distribution , Q.   Derive an expression for t...

Q.   Derive an expression for the intensity distribution due to Fraunhofer's diffraction at a single slit and shows that the intensity of the first subsidiary maxima is about 4.5 p

Zeener diode, how zeener diode work as a regulator?

how zeener diode work as a regulator?

Motion in straight line chap 2, #question.1) [chp 2; NC] You drop a superba...

#question.1) [chp 2; NC] You drop a superball from your dormitory window, a height, h=30 m, above the ground. 1 s after this your friend shoots a superball straight upward toward t

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