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

What are basic attenuation mechanisms in a fibre, What are basic attenuatio...

What are basic attenuation mechanisms in a fibre? The fundamental attenuation mechanisms into a fibre are as follows: a. Absorption b. Scattering (Mie and Rayleigh scatte

Imp, o meteors of rest-mass 0.1 and 0.2 kg, respectively, collide. If the r...

o meteors of rest-mass 0.1 and 0.2 kg, respectively, collide. If the relative speed before collision is 0.1c and an observer sees them coming with an equal and opposite speed and s

Polarisation, describe the construction and working of a Nicol prism.discus...

describe the construction and working of a Nicol prism.discuss how you obtain a plane polarised beam with it?

Lenses, Older people wear eye glasses with bifocal corrective lenses . What...

Older people wear eye glasses with bifocal corrective lenses . What is the eye defect that necessitate this eye glasses ?

Are the units of e volts per meter, The x-component of the electric field c...

The x-component of the electric field categorized by an electric potential V(x,y,z) be capable of be expressed as -dV/dx holding y and z constant. This would propose that the units

What is fluorescence, Q. What is fluorescence? When an atomic or else m...

Q. What is fluorescence? When an atomic or else molecular system is excited into higher energy state by absorption of energy it returns back to lower energy state in a time les

Dc voltage measurements, DC voltage measurements: Examples of how to ma...

DC voltage measurements: Examples of how to make DC voltage measurements are show in the two diagrams below. In both cases, the red and black test leads are connected to the '

Resistors and resistors characteristics, A resistor is a two-terminal elect...

A resistor is a two-terminal electrical or electronic component that resists an electric current by producing a voltage drop between its terminals in the accordance with ohm’s law.

Work out the voltage, Work out the  voltage for the following arrangement ...

Work out the  voltage for the following arrangement of 1.5V cells: ( Solve problems with cells in series, parallel and series-parallel)

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