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

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

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Electronic Principles
For a pure capacitor:

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

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Electronic Principles
A high-pass filter:

increases the level of all frequencies by a significant amount
None of these
has no effect on ac signals
passes higher-frequency signals and reduces lower-frequency signals
passes lower-frequency signals and reduces higher-frequency signals

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