Electronic Principles
A real voltage source has

Zero internal resistance
Infinite internal resistance
A small internal resistance
A large internal resistance
None of these

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Electronic Principles
Waveforms are graphs that show:

frequency on the vertical axis and amplitude on the horizontal axis
the passage of time on the vertical axis and amplitude on the horizontal axis
amplitude on the vertical axis and frequency on the horizontal axis
None of these
amplitude on the vertical axis and the passage of time on the horizontal axis

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Electronic Principles
The total capacitance of a series capacitor circuit is:

equal to the sun of the individual capacitive-reactance values
equal to the sum of the individual capacitance values
less than the value of the smallest capacitor
equal to the source voltage divided by total current
None of these

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