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
20 V
0.17 V
18.8 V
10.17 V

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Electronic Principles
Which one of the following statements is true for the voltages in a series RL circuit?

The total voltage lags the total current by less than 90
The total voltages is equal to the sum of the voltages across the resistance and inductance
The total voltage is less than the sum of the voltages across the resistance and inductance
The voltage always has the same amplitude and phase for every part of the circuit
None of these

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