Electronic Principles
Voltage is

None of these
The smallest electrically charged particle
The number of free electrons in an atom
The flow of charged particles through a material
Trie force that causes electrons to flow

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Electronic Principles
A low-pass filter:

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

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Electronic Principles
Which one of the following statements most accurately applies to the frequency of a waveform?

Unless specified otherwise, the frequency of a waveform is assumed to be 60 Hz
The actual frequency of a sine waveform is 1.41 times the working frequency
None of these
The higher the amplitude of a waveform, the higher its frequency
The longer the period of a waveform, the lower its frequency

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