The customary energy unit in atomic and nuclear physics is
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The reluctance of a magnetic circuit is not dependent on which of the following?
A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
What is the main advantage of temporary magnets?
A magnetic material losses its ferromagnetic properties at a point called
The K shell or the first shell has how many permissible number of orbiting electrons?
The temperature coefficient of resistance of insulators is
A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
Flux density is measured in
Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred…
How much is the flux in Weber in the above problem?
When the relative permeability of a material is slightly more than 1a it is called ______ material.
Which of the following statements is TRUE?
The ratio of the permeability of material to the permiabiity of air or vacuum.
What determines the value of the temperature coefficient of resistance of a material?
How is mutual inductance between two coils decreased?
The idea of preventing one component from affecting another through their common electric and magnetic…
Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
What is the unit of reluctance?
A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
The permeability of permalloy is
Materials whose permeabilities are slightly greater than that of free space
Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
One of the solid structures in which the position of the atoms or ions are predetermined
The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
The direction of force o a current carrying conductor placed in a m found by
A negative ion results when an atom gains an additional
Electric potential is a _______ quantity.
A magnetizing force of 1000 AT/m will produce a flux density of __________ i
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