Electronic Principles
Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

None of these
Ammeter
Voltmeter
Ohmmeter
Wattmeter

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Electronic Principles
The period of a waveform is:

the time required to complete one full cycle
the time required for the voltage to rise from 10% to 90% of the peak amplitude
None of these
the number of cycles completed in one second
equal to 0.707 times the peak amplitude

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