Question

the cathode of a zener diode in a voltage regulator is normally
select one:
o a. at 10.7 v
o b. more positive than the anode
o c. more negative than the anode
o d. grounded

Explanation:

In a zener diode used as a voltage regulator, it operates in reverse breakdown. In reverse bias, the cathode is connected to the positive side of the supply (or the higher - potential side), so the cathode is more positive than the anode. Option a is incorrect as the voltage depends on the zener voltage (not necessarily 10.7 V). Option c is wrong because in reverse bias (zener regulation mode) the cathode is more positive. Option d is incorrect as the cathode isn't necessarily grounded; it's connected to the positive part of the circuit for regulation.

Answer:

b. more positive than the anode