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

thermocouple
solar cell
piezoelectric devices
chemical cell
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?

None of these
The total current is greater than the sum of the currents for the resistance and capacitance
The total current is equal to 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 less than the sum of the currents for the resistance and capacitance

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Electronic Principles
When a parallel RLC circuit is operating at its resonant frequency:

inductive reactance is equal to the capacitive reactance
the difference between inductive and capacitive reactance is equal to the resistance
capacitive reactance is greater than the inductive reactance
inductive reactance is greater than the capacitive reactance
None of these

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Electronic Principles
The total inductive reactance of a parallel inductor circuit is:

equal to the sum of the individual inductive-reactance values
None of these
equal to the source voltage divided by total current
equal to the sum of the individual inductance values
less than the inductance value of the smallest inductor

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