Germanium atom has ______ protons and ______ electrons.
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The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
Who discovered superconductivity in 1911?
What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
An alloy of 22 percent iron and 78 per cent nickel.
What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring…
Who developed the electromagnetic theory of light in 1862?
What principle states that each electron in an atom must have a different set of quantum numbers?
Which of the following magnetic materials can be easily magnetized in both direction?
Which of the following is a natural magnet?
The property of a material which opposes the creation of magnetic flux in it
If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
What is the measure of the density and sign of the electric charge at a point relative to that at some…
A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
______ is an electromagnet with its core in the form of a close magnetic ring.
The unit of electrical energy is
The emf produced in a wire by its motion across a magnetic field does not depend upon the
The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
The magnetic potential in a magnetic circuit can be measured in terms of
What is the SI unit of specific resistance or resistivity?
The phenomenon by which a subtracts pieces of iron
What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
What is the SI unit of magnetic flux?
Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability…
The B-H curve for ________ is a straight line passing through the origin.
How much is the flux in Weber in the above problem?
Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
What is used as the insulating material or dielectric in an electric ion
An alloy of 40 percent iron and 60 percent nickel.
Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
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