Electronic Principles
A device that converts thermal energy to electrical energy is called a:

thermocouple
chemical cell
None of these
solar cell
piezoelectric devices

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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 repelled by the south pole of another magnet
None of these
that would be attracted to the earth's south magnetic pole

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