Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
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All matters (gasa liquid and solid) are composed of
The reluctance of a magnetic circuit varies with
One oersted (Oe) is equivalent to _____ Gb/cm.
What is the cgs unit of magnetomotive force?
The total number of magnetic lines of force in a magnetic field is called
States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
A permanent magnet does not exert a force on
The force between two magnetic poles varies with the distance between them. The variation is ______…
Hydrogen is an example of a _____ material.
What is the main advantage of temporary magnets?
The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
Amorphous solid is also called
Another term for corona discharge.
Who demonstrated the theory of electromagnetic induction in 1831?
The B-H curve of ________ is not a straight line.
Lenz's law is the consequence of the law of conservation of
Electric potential is a _______ quantity.
The resistance of a material is ____________ its area of cross-section.
Electric lines of force leave or enter the charge surface at an angle of
What is the relative permittivity of air?
Which of the following materials has permeability slightly less than that of free space?
The energy stored in an electrostatic field or electromagnetic field is called
Which of the following is a paramagnetic material?
The point in a magnet where the intensity of magnetic lines of force is maximum
The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
Who discovered that a current-carrying conductor would move when placed in a magnetic field?
The straight line passing through the two poles of magnet is called
The unit of flux is _____ in cgs system.
The reluctance of the magnetic circuit is ________ relative permeability of the material comprising…
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