The energy stored in an electrostatic field or electromagnetic field is called
R est energy
Correct Answer :
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The force between two charges placed a given distance apart ______ as the relative permittivity of the…
What determines the value of the temperature coefficient of resistance of a material?
Which of the following materials has the least hysteresis loop area?
One oersted (Oe) is equivalent to _____ Gb/cm.
If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
The reluctance of a magnetic circuit is not dependent on which of the following?
An alloy of 40 percent iron and 60 percent nickel.
The magnetic materials should have a large hysteresis loss for one of the following applications.
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Small voltages generated by a conductor with current in an external magnetic field.
Who developed the electromagnetic theory of light in 1862?
The unit of electrical energy is
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Which of the following electric quantities is vector in character?
The physical motion resulting from the forces of magnetic fields is called
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How many neutrons does a copper atom have?
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The force between two magnetic poles is _______ their pole strengths.
Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
One of the common application of an air- cored choke.
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If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
What is the relative permittivity of air?
The magnetic flux through a wire loop in a magnetic field does not d
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The force between two magnetic poles varies with the distance between them. The variation is ______…
If the number of valence electrons of an atom is exactly 4a then the substance is called
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