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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.
It states that at temperatures Curie temperature the magnetic susceptibility of ferromagnetic materials is inversely proportional to (T - Tc) i.e
How many times the kinetic energy reach at minimum and maximum point during one oscillation?
Q. Explain any one of the drawbacks of Rutherford atom model. As-per to the classical electromagnetic theory the accelerating electron must radiate energy at a frequency propo
Q. A beam of electrons travelling with a speed of 4 X 10 7 ms -1 is projected normal to a magnetic field of B = 10 -3 Wb m -2 . What is the path of the beam in the magnetic fiel
A uniform ring has a radius R with centre C. A nd B are 2 pts on the circumference.such that angle theta is 60 0 .find the equivalent resistance between pt A and B? solution) le
Is a godd illuminator is bigger better? This is somehow surprising that manufacturers place huge emphasis in the power consumption, stating with a machine is 50, 100 or 400 Wat
Which is correct statement about proton: (1)Proton is nucleus of deuterium (2)Proton is ionized hydrogen molecule (3)Proton is ionized hydrogen atom (4)Proton is alfa
When a liquid moves by a pipe having a varying diameter, the pressure against the inside walls of the pipe will be: a) The same throughout b) Lowest where the diameter is
Explain Slip-ring Slip-ring (or phase- wound) rotor having of a slotted laminated core of sheet steel. A three- phase winding is placed in the rotor slots. The rotor windin
AC Input Resistance in Common Emitter Configuration Ratio of change in base emitter voltage ( ? V BE ) to the resulting change in base current ( ? I B ) at cons
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