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Electromagnetic Field Theory

Electromagnetic Field Theory
Ohm’s law in point from field theory can be expressed as

 V = IR.
 R = ρ × ( l / A).
 J = E / σ.
 J = σE.

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Electromagnetic Field Theory
Materials subjected to rapid reversals of magnetism should have

 high permeability.
 low permeability.
 both a and b.
 low hysteresis loss.

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Electromagnetic Field Theory
The magnetic field required to reduce the residual magnetism to zero is called

 Saturation magnetism.
 Retentivity.
 Hysteresis.
 Coercivity.

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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with

 Gauss theorem.
 Law of conservation of energy.
 Newtons law of gravitation.
 Newtons law of motion.

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Electromagnetic Field Theory
The drawback of Daltons atomic structure is that, it says

 none of these.
 the atoms can neither be created nor be destroyed.
 unique nature of atom.
 most of the volume of an atom is empty space.

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Electromagnetic Field Theory
What is the unit of magnetic charge

 Ampere-meter square.
  Ampere meter.
 Coulomb.
 Ampere.

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MORE MCQ ON Electromagnetic Field Theory

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