Electronic Principles
The direction of electron current flow is:

from neutral to positive
from right to left
None of these
from positive to negative
from negative to positive

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Electronic Principles
The period of a waveform is:

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

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