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Resistance:
Resistance is the opposition to the motion of electrons. This arises as a result of collision of moving electrons.
The unit of resistance is "ohm" represented by omega.
As electric field is conservation, work done and as potential difference among two points is path independent and depends only on the position of points between which the charge is
When we move from a positive charge towards an equal negative charge along the line joining the two then initially potential reduces in magnitude and at centre changes into zero, b
Evaluate how many electrons flow through a wire when 1A current passes for 1 millisecond? Write two basic differences between p.d. and emf.
Explain the types of polymorphism In terms of thermodynamics, there are two kinds of polymorphism. For a monotropic system, a plot of the free energy of the various polymorphs
What do you understand by half period zones? What is their other name? Distinguish between physical and geometric (wave) approximations of light.
Ferromagnetic substances: on the basis of domain theory A. 1. In a ferro magnetic substance, large no. of domains occur. 2. The direction of magnetisation with in a
Charge is the characteristic associated with matter due to which it produces and experiences electrical and magnetic effects.
A modern turbofan engine in a commercial jet takes in air, part of which passes through the compressors, combustion chambers, and turbine, and the rest of which bypasses the compre
Shell type transformers: In this type of transformer the iron core surrounds the copper windings (fig. given below). The core is in the form of numeral 8. The entire flux pas
Assume we place a screen with two parallel slits right in front of a lens (with focal distance f ), and illuminate with light (at wavelength λ) from far away. (a) What will be the
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