Electronic Principles
Norton's theorem replaces a complicated circuit facing a load by an

None of these
Ideal current source and parallel resistor
Ideal voltage source and series resistor
Ideal voltage source and parallel resistor
Ideal current source and series resistor

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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 repelled by the south pole of another magnet
that would be attracted to the earth's south magnetic pole
None of these

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Electronic Principles
Which one of the following phrasers best describes flux density?

The opposition to a build-up of magnetic fields
The force that maintains lines of force
None of these
The rate of change of the number of lines of magnetic force
The concentration of lines of magnetic force

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