The ratio of the permeability of material to the permiabiity of air or vacuum.
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An electron- volt (eV) is a unit of
Which of the following magnetic materials can be easily magnetized in both direction?
The branch of Engineering which deals with the magnetic effect of electric current is known as
One weber of flux is equal to _______ magnetic lines of force.
Hysteresis loss can be reduced by one of the following.
A permanent magnet does not exert a force on
Steel is hard to magnetize because of its
The temperature coefficient of resistance of eureka is
If the number of valence electrons of an atom is less than 4a the substance is called
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The unit of electrical energy is
A magnetic material losses its ferromagnetic properties at a point called
Which of the following is a paramagnetic material?
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The temperature coefficient of resistance of insulators is
At/m is a unit of
One ampere- turn is equivalent to _____ gilberts
Who discovereda the relationship between magnetism and electricity that serves as the foundation for…
The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
The reluctance of a magnetic circuit is not dependent on which of the following?
What revolves about the positive nucleus in a definite orbit?
The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
Which of the following is used by temporary magnets as the magnetic material?
One of the solid structures in which the position of the atoms or ions are predetermined
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If the number of valence electrons of an atom is exactly 4a then the substance is called
The magnetic energy stored in an inductor is ______ current.
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