The temperature coefficient of resistance of eureka is
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The force between two magnetic poles is _______ their pole strengths.
How many neutrons does a copper atom have?
The greater percentage of materials is _________.
All magnetic field originates from
If the number of valence electrons of an atom is less than 4a the substance is called
Who developed the electromagnetic theory of light in 1862?
If the relative permittivity of a material is 10a then its permittivity is
What determines the value of the temperature coefficient of resistance of a material?
Bonding of atoms that is due to the force of attraction between positive ions and a group of negative…
The unit of flux density is
Core materials of a good relay have _________ hysteresis loop.
At/m is a unit of
Hipernik is an alloy containing __________ iron and __________ nickel.
Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
Gases whose particles are charged are known as
As the magnetic intensity decreasesa the relative permeability of a magnetic material
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…
A positively charged body has
Lenz's law is the consequence of the law of conservation of
The magnetic energy stored in an inductor is ______ current.
A one cubic cm of copper has how many free electrons at room temperature?
One oersted (Oe) is equivalent to _____ Gb/cm.
The permittivity of a material is given by one of the following formulas.
The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
What is the typical saturation flux density for most magnetic materials?
A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
This paper does not exhibit electricity because it contains the same number of
Hysteresis is a phenomenon of _________ in a magnetic circuit.
If the distance between two magnetic poles decreases by 2 timesa the force between them
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