Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
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The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
What principle states that each electron in an atom must have a different set of quantum numbers?
The force between two magnetic poles is _____ their poles strength.
The magnetic field around the conductor is determined by the
Defined as a closed path in which magnetic induction or flux flows
The electric flux density is a ________ quantity.
Amorphous solid is also called
The resistivity of a conductor ___________ with an increase in temperature.
Electronic current in a wire is the flow of ____________ electrons.
Which of the following materials has the least hysteresis loop area?
If a 20 V potential is applied across a relay coil with 50 turns having 1 ? of resistancea the total…
An alloy of 40 percent iron and 60 percent nickel.
Who developed the electromagnetic theory of light in 1862?
A magnetic material losses its ferromagnetic properties at a point called
Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
When the ferromagnetic substance is inserted in a current- carrying solenoida the magnetic field is
A positively charged body has
Refers to the non- metallic materials that have the ferromagnetic properties of iron.
The point in a magnet where the intensity of magnetic lines of force is maximum
Steel is hard to magnetize because of its
Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
The ratio of the permeability of material to the permiabiity of air or vacuum.
The force between two magnetic poles is _______ their pole strengths.
The magnetic field of a bar magnet most closely resembles the magnetic field of
A law that states that the current in a thermionic diode varies directly with the three- halves power…
There are how many compounds available in nature?
Electric field intensity is a ________.
Magnetic intensity is a
What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
The relation between absolute permittivity of air ( 0)a absolute p and velocity of light (c) is given…
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