Electronic Principles
Which one of the following statements is true for resistance in a parallel circuit?

None of these
The total resistance of a parallel circuit is always less than the value of the smallest resistance
The total resistance is equal to the sum of the individual resistances in a parallel circuit.
The total resistance of a parallel circuit is equal to the total voltage
The total resistance in a parallel circuit is equal to the average value of the individual resistances

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Electronic Principles
A low-pass filter:

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

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Electronic Principles
What is a free electron?

None of these
An electron that has no electrical charge
An electron that costs nothing
An electron that has been freed from its parent atom
An electron that has twice the amount of charge of a normal electron

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Electronic Principles
The rms value of a sine waveform is:

equal to 0.707 times the peak amplitude
equal to 1.41 times the peak amplitude
the number of cycles completed in one second
the time required to complete one full cycle
None of these

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