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

Rotating a mirror and the reflected ray, Rotating a Mirror and the Reflecte...

Rotating a Mirror and the Reflected Ray Describing in which when a mirror is rotated through an angle, the reflected ray is rotated through twice that angle. You might drag th

Determine the maximum value of flux density in the core, A single-phase, 50...

A single-phase, 50Hz transformer has 40 primary turns and 520 secondary turns. The cross-sectional area of the core is 270cm 2 . When the primary winding is connected to a 3

Inertia with a handkerchief and tumbler, Inertia with a handkerchief and tu...

Inertia with a handkerchief and tumbler Spread a handkerchief out on a smooth table top. Place a tumbler full with water near one corner of the handkerchief. Raise the opposite

How a pure semiconductor under ordinary conditions behaves, A pure semicond...

A pure semiconductor under ordinary conditions behaves like (A) A conductor.               (B) An insulator. (C) A magnetic material. (D) A ferro-electric material. A

Right-hand palm rule, Stretch the fingers and thumb of right hand at right ...

Stretch the fingers and thumb of right hand at right angles to one another. Then if the fingers shows in the direction of field and thumb in the direction of current i, then normal

What is eddy current?, The current induced in the conductor due change in ...

The current induced in the conductor due change in magnetic field is called eddy current.we study more about this in electro magnetic laws.

Beats, Is beats, which we study in physic similar as we consider beats of s...

Is beats, which we study in physic similar as we consider beats of sounds like bass. bits

Pressure, How does a manometer measure gas pressur?e

How does a manometer measure gas pressur?e

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