Electronic Principles
What is the difference between the kinds of charges for an electron and a proton?

An electron has a negative charge and a proton has a positive charge
An electron has a positive charge and a proton has no charge
An electron has a negative charge and a proton has no charge
None of these
An electron has a positive charge and a proton has a negative charge

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

None of these
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
that would be attracted to the earth's north magnetic pole

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