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

that has its molecules arranged in a random pattern
None of these
that would be repelled by the south pole of another magnet
that would be attracted to the earth's 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 statements most accurately reflects the nature of ac power?

The current in an ac circuit changes direction periodically
The current in an ac circuit flows in one direction at a steady level
None of these
The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit flows in two directions at the same time

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