A group of magnetically aligned atoms is called
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The B-H curve for ________ is a straight line passing through the origin.
How many electrons are needed in the valence orbit to give a material's stability?
The contribution to the ionization in an ionization chamber by electrons liberated from t he walls.
A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about…
The tiniest element of matter
What determines the value of the temperature coefficient of resistance of a material?
One coulomb of charge consists of ________ electrons.
Refers to the magnetic lines
The unit of flux is _____ in cgs system.
All matters (gasa liquid and solid) are composed of
The relation between absolute permittivity of air ( 0)a absolute p and velocity of light (c) is given…
Which of the following is a paramagnetic material?
What principle states that each electron in an atom must have a different set of quantum numbers?
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…
At/m is a unit of
A law that states that the current in a thermionic diode varies directly with the three- halves power…
The temperature coefficient of resistance of insulators is
What type of bond is formed when there exists some form of collective interactions between the (negatively…
The reluctance of a magnetic circuit is not dependent on which of the following?
What is the relative permittivity of air?
A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
One farad equals
Which of the following has the highest permeability?
Flux density is measured in
The magnetic field of a magnetized iron bar when strongly heated
Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as
An alloy of 40 percent iron and 60 percent nickel.
The simplest type of atom to exist is the ______ atom.
A substance that attracts pieces iron
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