Magnetism and Electromagnetism
The initial permeability of an iron rod is

The lowest permeability of the iron rod
The highest permeability of the iron rod
The permeability almost in non-magnetised state
The permeability at the end of the iron rod

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Magnetism and Electromagnetism
Out of the following statements, concerning an electric field, which statement is not true?

The electric field intensity at a point is numerically equal to the force exerted upon a charge placed at that point
The electric intensity is a vector quantity
Unit field intensity in the exertion of a force of one newton on a charge of one coulomb
An electric field is defined as a point in space at which an electric charge would experience a force

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