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

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

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Electronic Principles
Which one of the following statements best applies to a series RLC circuit?

All of these
The voltage waveform for each component always has the same amplitude and phase as the applied voltage
None of these
The current waveform for each component always has the same amplitude and phase as the applied current
The sum of the current is always less than the applied current

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit changes direction periodically
The current in an ac circuit flows in one direction at a steady level
The current in an ac circuit flows in two directions at the same time
None of these
The current in an ac circuit flows in one direction, but changes value periodically

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