Electronic Principles
A basic capacitor is composed of:

None of these
two conductors separated by a dielectric
two coils separated by a dielectric
two dielectrics separated by a conductor
two coils separated by a conductor

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Electronic Principles
The rms value of a sine waveform is:

equal to 0.707 times the peak amplitude
equal to 1.41 times the peak amplitude
the number of cycles completed in one second
the time required to complete one full cycle
None of these

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Electronic Principles
Which one of the following statements most accurately reflects the nature of ac power?

The current in an ac circuit flows in one direction at a steady level
The current in an ac circuit flows in two directions at the same time
The current in an ac circuit flows in one direction, but changes value periodically
The current in an ac circuit changes direction periodically
None of these

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