The phenomenon by which a subtracts pieces of iron
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Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
The customary energy unit in atomic and nuclear physics is
Which of the following magnetic materials can be easily magnetized in both direction?
The magnetic potential in a magnetic circuit can be measured in terms of
The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
One ampere- turn is equivalent to _____ gilberts
A law stating that the magnetic susceptibilities of most paramagnetic substances are inversely proportional…
All matters (gasa liquid and solid) are composed of
What is the reluctance of a magnetic path having a length of 2x 10^-3m and crosssectional area of 2.5…
The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
What is another name for relative permittivity?
Electric field intensity at a point is numerically equal to ________ at that point.
The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
Which of the following materials has permeability slightly less than that of free space?
What is the practical unit of electrical energy?
The resistivity of a conductor ___________ with an increase in temperature.
Magnetic effects of the earth as a huge magnet with north and south poles.
If the length and area of cross-section of a wire are doubleda then its resistance
Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
Which of the following is a vector quantity?
The magnetic flux of 2000 lines is how many Maxwells?
The temperature coefficient of resistance of semiconductors is
Lenz' law states that the direction of the induced emf and hence current
Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
The uncharged particles which have no effect on its atomic charge.
A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
Who discovered that a current-carrying conductor would move when placed in a magnetic field?
Magnetic intensity is a
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