Electronic Principles
Voltage is

None of these
The smallest electrically charged particle
The flow of charged particles through a material
The number of free electrons in an atom
Trie force that causes electrons to flow

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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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Electronic Principles
Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage?

The voltage reverses polarity periodically
None of these
The voltage remains at one polarity but changes value periodically
The voltage remains at one polarity and at a steady level
The voltage causes current to flow in two directions at the same time

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