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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.
Resistivity of conductors is most affected by (A) Composition. (B) Temperature. (C) Pressure. (D) Current. Ans: Resistivity of conductors is most
Some wire of cross-sectional area 1mm 2 has a resistance of 20 ?. Determine (a) the resistance of a wire of the same length and material if the cross-sectional area is 4mm 2 ,
Please explain diagram of nicol prism, How its working and how its mechanism,,,
..Proof of varignon''s theorem
A point charge q is imbedded at the center of a sphere of linear dielectric material (with susceptibility and radiusR). Find the electric field, the polarization, and the bound cha
Example of like and unlike parallel forces
is it the current or the voltage which is responsible for electrc shock?
formula for time period of oscillation of magnet in a vibration magnetometer
Can you explain lens maker's formula. Derive the mathematical expression for the effective focal length of two thin lenses in contact.
What is Joule Cycle? Find the efficiency of the Joule cycle, consisting of two isobars and two adiabats. Presume that the heat capacities of the gas C p and C v are constan
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