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

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

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

that would be repelled by the south pole of another magnet
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 attracted to the earth's north magnetic pole

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