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(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
what happens when a melt caontaining 1%ag with 99%pb
Tiger Woods can hit a golf ball with 55 N of force. How hard does the ball hit back on the club? (a) more than 55 N of force, (b) less than 55 N of force, (c) exactly 55 N of force
It is the property of the substance which defines how easily a substance can be magnetized. It may also be defined as the ratio of intensity of magnetization (I) in a substance to
short answer
State Ampere's circuital law and obtain it's differential form.
The current in a coil changes of 5A to 10A in 10 -2 s. Then an emf of 50 mill volts is induced in a coil neat it. Determine the mutual inductance of the coil.
Who are the best fiber optics manufacture? To single out a company would be grossly unfair since in such business the players are, usually, respected industrial corporations wi
. Design a 32:1 multiplexer using two 16:1 multiplexers and one OR Gate.
A thin layer of an incompressible fluid flows steadily over a horizontal smooth plate as shown in the figure. The fluid surface is open to the atmosphere, and an obstruction having
An electric iron draws a current of 0.5A.The voltage is 200V. Calculate the amount of charge flowing through it in 1 hour.
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