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

piezoelectric devices
solar cell
chemical cell
thermocouple
None of these

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

None of these
that has its molecules arranged in a random pattern
that would be attracted to the earth's south magnetic pole
that would be repelled by the south pole of another magnet
that would be attracted to the earth's north magnetic pole

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