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Joule's laws (J.P. Joule)
Joule's first law
The heat Q generated while a current I pass through a resistance R for a particular time t is given by following
Q = I2 R t
Joule's second law
The internal energy of an ideal gas is independent of its volume & pressure, depending on its temperature only.
If two lines of dissimilar metals are connected at their ends so as to form two junctions, then the resulting arrangement is known as a "Thermo couple".
Plot the Bremsstrahlung emitted (intensity vs energy) from a copper target for (i) both 15 keV and 30 keV electrons, (ii) for 15 keV electrons at both 10 and 50 mA current and (iii
In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity. (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will d
A 240-turn solenoid having a length of 21 cm and a diameter of 8.8 cm carries a current of 0.44A. Calculate the magnitude of the magnetic field inside the solenoid.
what are the examples
84.1grams of He are compressed reversibly and isothermal at 100.0C from 28.0Litre to 7.37Litres. Calculate the the entropy change in joules/K.
Explain the Conservation of Momentum In a collision, energy is not all time conserved, if not the collision is totally elastic (all stored energy is turned into kinetic energy
Can light is made to move or change along a side emitting optics? Along with roped or braided multicore fiber and a particular process at the common end optics can be made to c
A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: a) All converted into h
If we permit monochromatic light to fall normally on the surface of lens, then circular interference fringes of radius r can be consider in the reflected light. This circular fring
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