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

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

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Electronic Principles
In a pure inductor:

ac current leads the voltage by 90 degree
ac current lags 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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Electronic Principles
Which one of the following statements is true for the voltages in a series RC circuit?

The total voltage is greater than the sum of the voltages across the resistance and capacitance
The total voltage is equal to the sum of the voltages across the resistance and capacitance
The voltage always has the same amplitude and phase for every part of the circuit
The total voltage is less than the sum of the voltages across the resistance and capacitance
None of these

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Electronic Principles
A high-pass filter:

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

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