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

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

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Electronic Principles
Current is

An imbalance of electrical charges
The force that causes electrons to flow
The flow of charged particles through a material
None of these
The number of free electrons in an atom

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Electronic Principles
For a pure capacitor:

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

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