Determine the magnetic flux density at a point on the axis of a solenoid with radius b and length L, and with a current I in its N turns of closely wound coil. Show that the result reduces to that given in equation 6-14 when L approaches infinity.

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Explanation:

Magnetic flux density definition, a vector quantity used as a measure of a magnetic field.

It can be defined as the amount of magnetic flux in an area taken perpendicular to the magnetic flux's direction.

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