Electronic Principles
Suppose the zener diode has a breakdown voltage of 10 V and zener resistance of 8.5 W, what is the additional voltage when the current is 20 mA?

0.17 V
18.8 V
20 V
10.17 V
None of these

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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
None of these
the time required for the voltage to rise from 10% to 90% of the peak amplitude
equal to 0.707 times the peak amplitude

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