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

piezoelectric devices
None of these
solar cell
thermocouple
chemical cell

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

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 north pole of another magnet
that would be attracted to the earths north magnetic pole
None of these

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Electronic Principles
Which one of the following statements is true for the currents in a series RC circuit?

The total current is less than the sum of the currents for the resistance and capacitance
The current always has the same amplitude and phase for every part of the circuit
The total current is equal to the sum of the currents for the resistance and capacitance
The total current is greater than the sum of the currents for the resistance and capacitance
None of these

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