Steel is hard to magnetize because of its
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A t/m is a unit of
Lenz's law is the consequence of the law of conservation of
Under ordinary conditionsa a body is considered
What is the unit of magnetomotive force?
One electron volt (1 eV) is equivalent to _____ joules
Cobalt is an example of a ______ material.
How many neutrons does a copper atom have?
Materials whose permeabilities are slightly greater than that of free space
If the value of 0 a conductor is 1/234 per oCa then the value of 18is
The B-H curve for ________ is a straight line passing through the origin.
A good conductor has how many valence electrons?
How is mutual inductance between two coils decreased?
What is the relative permittivity of air?
Three charges of +5 Ca -6 C and +9 C are placed inside a sphere. What is the total flux passing through…
The core of a magnetic equipment uses a magnetic material with
The ability of a material to conduct magnetic flux through it.
The direction of force o a current carrying conductor placed in a m found by
One of the solid structures in which the position of the atoms or ions are predetermined
A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
The reluctance of a magnetic circuit varies with
If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…
Who developed the electromagnetic theory of light in 1862?
The resistance of a material is ____________ its area of cross-section.
The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability…
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