The magnetic potential in a magnetic circuit can be measured in terms of
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The temperature coefficient of resistance of insulators is
Which of the following has the least number of valence electrons?
Who demonstrated the theory of electromagnetic induction in 1831?
One of the solid structures in which the position of the atoms or ions are predetermined
The magnetic flux through a wire loop in a magnetic field does not d
When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
How many neutrons does a copper atom have?
What type of bond is formed when there exists some form of collective interactions between the (negatively…
An electron- volt (eV) is a unit of
Which element has four valence electrons?
The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
__________ is a substance of whose molecules consist of the same kind of atom.
The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
Refers to the non- metallic materials that have the ferromagnetic properties of iron.
Materials whose permeabilities are slightly greater than that of free space
The emf induced in a coil due to the changing current of another neighboring coil is called
Electric field intensity is measured in
The emission of electrons from hot bodies is called
One that has magnetic poles produced by internal atomic structure with no external current necessary
What is the SI unit of specific resistance or resistivity?
Which of the following is a diamagnetic material?
What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
An alloy of 40 percent iron and 60 percent nickel.
Which of the following is used by permanent magnets as the magnetic material?
One oersted (Oe) is equivalent to _____ Gb/cm.
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