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Two point changes q1 and q2 are placed at a distance r from one another then electrostatic potential energy of two phase charge system will be kq1q2/r . We take P.E. of two charge system to be zero when they are placed at infinity.
Determine current flowing through 5 ? resistor in the circuit demonstrated in Figure. Use Source transformation technique. Ans: Determination of current flowing thr
Potential free contacts (also known as "dry contacts") are simply contacts which are physically operated with the main device, but not electrically connected to it. For example a m
Q. Why does heat makes matter to expand? Answer:- Water contracts as it cools similar to all other liquids until it reaches a temperature of about 4 degrees Celsius at whi
With all the limitations, what are the uses of fiber optics? There is an ordinary misconception about the quantity of light required for a given task: more light is not essenti
Q. State Huygen's principle. Huygen's principle: (a) Every point on a specified wave front may be considered as a source of secondary wavelets which spread out with the sp
The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by: a) Thompson b) Bohr c) Ruther
Friction has several disadvantages but life is impossible without friction because friction has many benefits also.
Q. State any three properties of the nuclear forces. (i) A Nuclear force is charge independent. (ii) A Nuclear force is the strongest recognized force in nature. (iii) Nucl
A fishing line's lead sinker has a volume of 1.40 x 10 -5 m 3 . The density of lead is 1.2 x 10 4 kg/m 3 . What is the apparent weight of the sinker when immersed in freshwat
Q. Illustrate what is a thermal transformation? Answer:- Chemical or else physical changes are not requiring a change in the temperature of the substance as in the formati
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