Electronic Principles
Which one of the following kinds of materials has the highest permeability?

None of these
A paramagnetic material
All of these
A ferromagnetic material
A diamagnetic material

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Electronic Principles
What is a free electron?

An electron that costs nothing
None of these
An electron that has been freed from its parent atom
An electron that has no electrical charge
An electron that has twice the amount of charge of a normal electron

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