Question

# A Zener diode when used as a voltage regulator, is connected (a) in forward bias. (b) in reverse bias.(c) in parallel to the load.(d) in series to the load.

A
(a) and (b) are correct
B
(b) and (c) are correct
C
(a) only is correct
D
(d) only is correct
Solution
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#### When Zener diode is biased in the forward direction it behaves like a normal signal diode passing the current increasing linearly with voltage, but as soon as a reverse voltage applied across the Zener diode attains the breakdown voltage of the device, a large current starts to flow through the diode. Thus, for a constant voltage large current will flow through it. Hence, it always connected in parallel to the load.

1
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