Electronic Principles
The peak value of a sine waveform is:

the amplitude at 90% of the maximum value
the amplitude at 70.7% of the maximum value
the amplitude at 1.41 times the maximum value
None of these
the maximum positive or negative value

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Electronic Principles
Waveforms are graphs that show:

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

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Electronic Principles
Which one of the following is a statement of Kirchhoffs current law?

The current through a resistance is proportional to the value of resistance and the IR drop across it
The algebraic sum of currents entering and leaving a point is equal to zero
The total current in a parallel circuit is less than the value of the smallest current
None of these
The algebraic sum of currents in a loop is equal to zero

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