Electronic Principles
Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit?

Reluctance
None of these
Magnetomotive force
Flux density
Number of lines of force

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Electronic Principles
A low-pass filter:

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

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