Electronic Principles
Current is

The force that causes electrons to flow
None of these
The flow of charged particles through a material
An imbalance of electrical charges
The number of free electrons in an atom

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Electronic Principles
The period of a waveform is:

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

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