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ENERGY LEVELS
The energy levels, measured in electron volts (e.v.) in which orbiting electrons exist comply with a law of physics which states that energy can be given to electrons only in discrete amounts (quanta) which means that there are energy values that an electron cannot acquire. From this it can be deducted that there is a forbidden energy gap between each of the allowed energy bands K to O.
The width of the forbidden energy gap between the top of the valence band and the bottom of the conduction band determine the electrical conducting properties of materials.
A balance trick Get a smooth metre stick and let it rest lightly on your two forefingers. Place your fingers near the ends of the stick and then move them in the direction of t
Determine the average kinetic energy of each type of molecule? A cylinder contains a mixture of helium and argon gas in equilibrium at temperature of 149°C. (a) What is the a
In the circuit shown in Figure, with the switch in position 1, the capacitor is uncharged. If he switch is moved to position 2 at time t =0s, measure (i) The initial curren
A secondary cell is that cell is which the electrical energy is first up as a chemical energy and when the current is taken from the battery, the chemical power is reconverted into
x-ray and e ray
a) Heat produced is directly proportional to the square of the current passing by a conductor. b) This effect is produced because of collision of free electrons with positive io
WORK AND ENERGY 1. Work can be defined as: the force applied in direction of displacement ×. This means that if the force F acts at an angle θ with respect to the direct
The current is an RL circuit drops from 1.1 A to 13 mA in the first second following removal of the battery from the circuit. If L is 12H, find the resistance R in the circuit.
Uniformity principle (E.P. Hubble): The principle that the laws of physics here & now are not distinct, at least qualitatively, from the laws of physics in previous or future
define like and unlike parallel forces
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