Electronic Principles
Doubling the diameter of the coil in an inductor:

multiplies the value of inductance by four
reduces the value of inductance by one-fourth
reduces the value of inductance by one-half
None of these
multiplies the value of inductance by two

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

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

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Electronic Principles
A high-pass filter:

passes higher-frequency signals and reduces lower-frequency signals
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
None of these

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