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

Image of an object formed in converging thin lens, A converging thin lens h...

A converging thin lens has a focal length of 27 centimetres. An object is placed 9 centimetres from the lens.  Where is the image of this object formed? Ans: The images of g

Digital image, What is the raw file size for an image of 80 rows and 100 co...

What is the raw file size for an image of 80 rows and 100 columns, with pixels on 14 bits and with an extra row for the header? The minimum and maximum values observed in a

What are fibers optics made of, What are fibers optics made of? For vis...

What are fibers optics made of? For visible light or lighting purposes spectrum transmission, several types of fibers are used. Glass in very suitable strands which have to be

2-point source interference patterns, 2-Point Source Interference Patterns ...

2-Point Source Interference Patterns The diagram below displays various two-point source interference patterns. The crests of each wave are denoted through a thick line althoug

Find the magnitude and direction of the force, Two straight, parallel, curr...

Two straight, parallel, current carrying conductors are kept at a distance from each other, in air. The direction of present in both the conductors is the same. Find the magnitude

Capacitors in parallel, Capacitors in parallel: Three capacitors are co...

Capacitors in parallel: Three capacitors are connected in parallel. If on closing the switch S a current I flows in the circuit, then from Kirchoff's first law:

Electric potential of a solid object, Which statement concerning the electr...

Which statement concerning the electric potential of a solid object made out of a perfectly conducting medium is most correct? Answer: It is the electric field which is z

Engineering materials and engineering materials properties, Engineers and t...

Engineers and technologist engage themselves in the design and manufacturing of machine like latches, engines, motors, generators, bulldozers etc. And in the fabrication of vehicle

Voltage division, Voltage division: In a series circuit Ohm's law appli...

Voltage division: In a series circuit Ohm's law applies for each component.  However, since the current is common to all components we have:           V1 = IR1,  V2 = IR2,

Isothermal process, In an isothermal process, the temperature of body alway...

In an isothermal process, the temperature of body always same throughout the process. As the internal energy of a system depends only on its temperature, thus there is no modificat

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