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

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

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

has no effect on the current through the inductors
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
cuts the current through the inductors one-half

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