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Clarification needed regarding the Magnetization and Demagnetization process happened in the Hysteresis loop?
Ans) In classical electromagnetism or magnetic polarization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. The origin of the magnetic moments answerable for magnetization can be either microscopic electric currents resulting from the motion of electrons in atoms, or the spin of the electrons or the nuclei. Net magnetization results from the response of a material to an external magnetic field, together with any unbalanced magnetic dipole moments that may be inherent in the material itself; for instance, in ferromagnets. Magnetization is not always homogeneous within a body, but rather varies among different points. Magnetization also defines how a material responds to an applied magnetic field as well as the way the material changes the magnetic field, and can be used to measure the forces that result from those interactions. It can be compared to electric polarization, which is the measure of the corresponding response of a material to an electric field in electrostatics. Physicists and engineers describes magnetization as the quantity of magnetic moment per unit volume. It is represented by a vector M.
Define Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat into work. It is explained as the ratio o
reasonings questions from chapter motion 1D
Q. Define: the temperature coefficient of resistance. The ratio of raise in resistance per degree rise in temperature to its resistance at 0 o C is called as temperature coeff
Q. In the given circuit, calculate the current through the circuit and mention its direction . Let the current be I. 5I + 10 I + 5 I = 10 + 20 that is 20 I = 30 Current I =
Calculate how much heat energy is required to raise the temperature of a cube of copper of side 2cm. from 300 to 320k. given: density=8933kg/m cube , atomic weight=63.55, cp=24j/k/
for 2013
clipper circuits
Bragg's law (Sir W.L. Bragg; 1912) While a beam of x-rays strikes at crystal surface wherein the layers of atoms or ions are separated regularly, the maximum intensity of the
Explain how receiver functions in fibre optic communication system. Receiver: The optical signal received must be first converted within digital form and in case analog outp
The position of an airplane as a function of time is shown in the figure below. a. What is the average velocity of the airplane? b. What is the average speed of the air
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