Which of the following statements is true in case of zener diode?a)The zener diode is a heavily doped diodeb)A zener diode is always reverse biasedc)A zener diode has sharp breakdown voltaged)There is no similarity between forward characteristic curve of a diode and zener diodeCorrect answer is option 'A,B,C'. Can you explain this answer?

Question

Answer

We know that zener diode has sharp breakdown voltage. It is always reverse biased and heavily doped diode. There is similarity between forward characteristic curve of a diode.
The correct answers are: A zener diode has sharp breakdown voltage, A zener diode is always reverse biased, The zener diode is a heavily doped diode

Answer

We know that zener diode has sharp breakdown voltage. It is always reverse biased and heavily doped diode. There is similarity between forward characteristic curve of a diode.
The correct answers are: A zener diode has sharp breakdown voltage, A zener diode is always reverse biased, The zener diode is a heavily doped diode

Answer

Statement A: The zener diode is a heavily doped diode
- This statement is true. A zener diode is indeed a heavily doped diode. It is doped with impurities to increase its conductivity and enable it to operate in the zener breakdown region.

Statement B: A zener diode is always reverse biased
- This statement is true. A zener diode is designed to operate in the reverse bias region. When a voltage is applied in the reverse direction, the zener diode exhibits the zener effect, which is the ability to maintain a nearly constant voltage across its terminals.

Statement C: A zener diode has sharp breakdown voltage
- This statement is true. A zener diode has a sharp breakdown voltage characteristic. It means that once the reverse bias voltage reaches a certain threshold called the breakdown voltage or zener voltage, the zener diode starts conducting heavily, allowing current to flow in the reverse direction. This breakdown voltage is quite precise and remains relatively constant over a wide range of current.

Statement D: There is no similarity between forward characteristic curve of a diode and zener diode
- This statement is false. While the forward characteristic curve and reverse characteristic curve of a diode and a zener diode may have some differences, there are also similarities between them. Both diodes exhibit exponential behavior in the forward bias region, where the current increases rapidly with a small increase in voltage. Similarly, when the voltage is applied in the reverse direction, both diodes will have a certain reverse leakage current before reaching the breakdown region.

In summary, all three statements A, B, and C are true in the case of a zener diode. It is heavily doped, always reverse biased, and has a sharp breakdown voltage characteristic. Statement D is false as there are similarities between the forward characteristic curve of a diode and a zener diode.

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