Electronic Principles
What is the difference between a conductor and an insulator?

None of these
An insulator allows current to flow much easier than a conductor does
The difference between conductors and insulators depends on how they are used
A conductor allows current to flow much easier than an insulator does
An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all

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

that would be attracted to the earth's north magnetic pole
that has its molecules arranged in a random pattern
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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