The emission of electrons from hot bodies is called
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The temperature coefficient of resistance of insulators is
What is another name for relative permittivity?
Under ordinary conditionsa a body is considered
The resistance of a material is ____________ its area of cross-section.
A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
Which of the following statements is TRUE?
What principle states that each electron in an atom must have a different set of quantum numbers?
Materials whose permeabilities are slightly greater than that of free space
One coulomb of charge consists of ________ electrons.
What is the SI unit of reluctance?
The tiniest element of matter
If the relative permittivity of a material is 10a then its permittivity is
The unit of electrical energy is
The force acting on a unit n- pole placed at that point is called
There are how many compounds available in nature?
What type of bond is formed when there exists some form of collective interactions between the (negatively…
An alloy of 22 percent iron and 78 per cent nickel.
The reluctance of a magnetic circuit is not dependent on which of the following?
If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in…
The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
When the relative permeability of a material is slightly more than 1a it is called ______ material.
______ is an electromagnet with its core in the form of a close magnetic ring.
Refers to the non- metallic materials that have the ferromagnetic properties of iron.
Who discovered the most important electrical effects which is the magnetic effect?
Permeance is analogous to
Electromotive force in a circuit
Gases whose particles are charged are known as
The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
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