Magnetism and Electromagnetism
For a given wire-wound core, an increase in current through the coil

Increases the flux density
Reverses the flux lines
Decreases the flux density
Causes no change in flux density

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

An electric field is defined as a point in space at which an electric charge would experience a force
Unit field intensity in the exertion of a force of one newton on a charge of one coulomb
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

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