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

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

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Electronic Principles
Which one of the following statements is true for the voltages in a series RL circuit?

The voltage always has the same amplitude and phase for every part of the circuit
None of these
The total voltage is less than the sum of the voltages across the resistance and inductance
The total voltages is equal to the sum of the voltages across the resistance and inductance
The total voltage lags the total current by less than 90

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Electronic Principles
The south pole of a magnet is the one:

that would be attracted to the earth's south magnetic pole
that would be repelled by the north pole of another magnet
None of these
that has its molecules arranged in a random pattern
that would be attracted to the earths north magnetic pole

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