Electronic Principles
The peak value of a sine waveform is:

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

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Electronic Principles
Which one of the following phrases most accurately describes a purely capacitive circuit?

Capacitive reactance provides the only opposition to current flow
None of these
Resistances provide the only opposition to current flow
The ac voltage leads the current by 90 degree
Combinations of resistance and capacitive reactance provide any opposition to current flow

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Electronic Principles
What is the difference between a conductor and an insulator?

The difference between conductors and insulators depends on how they are used
A conductor allows current to flow much easier than an insulator does
None of these
An insulator has an excessive number of free electrons, while a conductor has a few free electrons or none at all
An insulator allows current to flow much easier than a conductor does

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