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

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

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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage causes current to flow in two directions at the same time
The voltage remains at one polarity but changes value periodically
The voltage reverses polarity periodically
None of these
The voltage remains at one polarity and at a steady level

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