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The magnetic potential in a magnetic circuit can be measured in terms of
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Permeance is analogous to
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The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
B. Faraday's first law of electromagnetic induction
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An effect which is generally used in the gausameter to measure flux density.
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One oersted (Oe) is equivalent to _____ Gb/cm.
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Who developed the electromagnetic theory of light in 1862?
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The unit of flux density is
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The hot resistance of an incandescent lamp is about _______ its cold resistance.
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Which of the following materials has the highest dielectric strength?
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The electric flux density is a ________ quantity.
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The force between two magnetic poles is _______ their pole strengths.
A. directly proportional to
C. inversely proportional to
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The permittivity of a material is given by one of the following formulas.
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The force of attraction or repulsion between two magnetic poles is inversely proportional to the square of the distance between them. This is known as
B. Faraday's first law of electromagnetic induction
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The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization when subjected to a dc magnetic field.
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A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
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If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then the end under observation is a south pole. This is known as
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Under ordinary conditionsa a body is considered
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The magnetic flux through a wire loop in a magnetic field does not d
B. The magnitude of the field
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Cobalt is an example of a ______ material.
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One farad equals
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A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about 12 grades.