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Electron distribution:
The atoms of a solid have electrons rotating in orbits around the positive nucleus. This is true of gases and liquids as well. These orbiting electrons exist in energy shells or levels.
The potential energy (energy of position) increases with distance out from the nucleus. The outermost occupied energy level is called the valence shell. This is a higher energy level than the energy levels of electrons in the other shells since the electrons are rotating further from the nucleus.
The electrons in the valence shell can most easily pass from one atom to another and thus constitute an electric current. Furthermore, the valence electrons are the ones that go into chemical reactions, or combinations, with other atoms.
When an outside influence such as an electric field or heat is applied, a valence electron may acquire sufficient energy to jump through a forbidden (energy) gap and on into the conductor band where it is free of any influence of the positive nucleus and becomes a carrier of electricity, ready to take the place of another electron that has just left its own atom, in the same manner.
P-N junction is (A) A rectifier. (B) An amplifier. (C) An Oscillator. (D) A Coupler. Ans: P-N junction is a rectifier.
Microwave diathermy The microwave diathermy can be produced in special tube which can be placed several inches from the region to be treated . Microwave can penetrate deep int
what is coplaner vactors
Define the introduction about Schrödinger’s Atom. Introduction to the Schrödinger’s Atom: To describe the spectral line puzzle, Bohr came up along with a radical model of t
2 liters of water at 80 celsius is found into a plastic bucket containing 10 liters of water at 20 celsius what is the final temp of the mixture. specific capacity of water is 1 c
Loudness: It is the characteristics of sound by a faint sound can be distinguish by a loud sound is known as loudness.
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what is gravity
CPH has long wavelength, how much it is? Answer; according relation;. If we know its mass and speed, then we can talk about CPH wavelength
8. System is shown in the figure. Assume that cylinder remain is contact with the two wedges. Find the speed of cylinder at the given instant cylinder
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