Electronic Principles
What are the main parts of an atom?

None of these
Electrons, ions, and neutrons
Electrons, protons, and neutrons
Protons only
Electrons, protons, and ions

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Electronic Principles
A high-pass filter:

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

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Electronic Principles
A low-pass filter:

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

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