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?

None of these
10.17 V
20 V
18.8 V
0.17 V

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Electronic Principles
The north pole of a magnet is the one:

that would be attracted to the earth's north magnetic pole
that would be attracted to the earth's south magnetic pole
None of these
that would be repelled by the south pole of another magnet
that has its molecules arranged in a random pattern

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