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

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

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Electronic Principles
Doubling the operating frequency of a purely inductive circuit:

cuts the current through the inductors one-half
increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit
None of these
doubles the amount of current through the inductors
has no effect on the current through the inductors

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