Question: A current in a solenoid having air in the interior creates a magnetic field B = #0H. Describe qualitatively what happens to the magnitude of

A current in a solenoid having air in the interior creates a magnetic field B = #0H. Describe qualitatively what happens to the magnitude of B as
(a) Aluminum,
(b) Copper, and
(c) Iron are placed in the interior.

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