What is meant by a solenoid? Give any two properties of the magnetic field produced by solenoid
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a cylindrical coil of wire acting as a magnet when carrying electric current is a solenoid.
A length wise cutaway of the solenoid shows magnetic field lines densely packed and running from the south pole to the north pole, through the solenoid. The magnetic field within a solenoid depends upon the current and density of turns. The energy density of the magnetic field depends on the strength of the field, squared, and also upon the magnetic permeability of the material it fills. Iron has a much, much larger permeability than a vacuum.
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