Solve
Guides
Standard XII
Physics
Mutual Induction
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
Open in App
Solution
Verified by Toppr

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.

Was this answer helpful?
1
Similar Questions
Q1

How is a Zener diode fabricated? What causes the setting up of high electric field even for small reverse bias voltage across the diode?

Describe, with the help of a circuit diagram, the working of Zener diode as a voltage regulator

OR

(a) Explain with the help of a diagram, how depletion region and potential barrier are formed in a junction diode.

(b) If a small voltage is applied to a p-n junction diode, how will the barrier potential be affected when it is (i) forward biased, and (ii) reveres biased?

View Solution
Q2

A 2 V battery is connected across the points A and B as shown in the figure given below. Assuming that the resistance of each diode is zero in forward bias and infinity in reverse bias, the current supplied by the battery when its positive terminal is connected to A is


View Solution
Q3

Consider the following statements (A) and (B) and identify the correct answer.

(A) A zener diode is connected in reverse bias, when used as a voltage regulator.

(B) The potential barrier of pāˆ’n junction lies between 0.1 V to 0.3 V.

View Solution
Q4

A transistor is used in the common emitter mode as an amplifier then:
(A) the base emitter junction is forward baised.
(B) the base emitter junction is reverse baised.
(C) the input signal is connected in series with the voltage applied to bias the base emitter junction.
(D) the input signal is connected in series with the voltage applied to bias the base collector junction.

View Solution
Q5

How is a Zener diode fabricated? What causes the setting up of high electric field even for small reverse bias voltage across the diode?
Describe, with the help of a circuit diagram, the working of Zener diode as a voltage regulator.

View Solution
Solve
Guides