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

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

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Electronic Principles
In a pure inductor:

ac current lags the voltage by 90 degree
ac current leads the voltage by 90 degree
ac current is converted to dc voltage
None of these
ac current and voltage are exactly in phase

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