Home
Class 12
PHYSICS
Zener diode is used in reverse bias. Whe...

Zener diode is used in reverse bias. When its reverse bias is increased, how does the thickness of the depletion layer change?

Text Solution

AI Generated Solution

To solve the question regarding how the thickness of the depletion layer in a Zener diode changes when its reverse bias is increased, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Zener Diode**: - A Zener diode is a type of p-n junction diode that is designed to operate in reverse bias. It allows current to flow in the reverse direction when the voltage exceeds a certain value known as the Zener breakdown voltage. **Hint**: Remember that Zener diodes are specifically designed for reverse bias operation. ...
Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER 2019

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION B|9 Videos

  • SAMPLE PAPER 2019

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION C|8 Videos

  • EXAM REVISION SERIES

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise All Questions|41 Videos

  • XII BOARDS

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION - B|7 Videos

Similar Questions

Explore conceptually related problems

In a zener diode, break down occurs in reverse bias due to

In which case is the junction diode is not reverse bias-

In p-n junction diode, near junction holes combine with electrons, and impurity ions form a barrier potential which opposes the recombination of electron-hole pairs. Value of barriers potential for Si is 0.7 volt and for Ge is 0.3 V. thus charge density at the junction becomes zero and an electric field is produced near junction. this region is called depletion layer. Thickness of depletion layer is of the order of 10^(-6) meter. in forward bias p terminal is connected with the positive terminal of cell and n is connected with negative terminal of cell and n is connected with negative terminal of cell. as forward voltage is increased, current increases exponentially. As forward voltage is increased barrier potential in p-n junction diode is A. increased B. Decreased C. remain same D. nothing can be said.

In p-n junction diode, near junction holes combine with electrons, and impurity ions form a barrier potential which opposes the recombination of electron-hole pairs. Value of barriers potential for Si is 0.7 volt and for Ge is 0.3 V. thus charge density at the junction becomes zero and an electric field is produced near junction. this region is called depletion layer. Thickness of depletion layer is of the order of 10^(-6) meter. in forward bias p terminal is connected with the positive terminal of cell and n is connected with negative terminal of cell and n is connected with negative terminal of cell. as forward voltage is increased, current increases exponentially. For Si diode minimum required forward voltage so that current can flow is

In p-n junction diode, near junction holes combine with electrons, and impurity ions form a barrier potential which opposes the recombination of electron-hole pairs. Value of barriers potential for Si is 0.7 volt and for Ge is 0.3 V. thus charge density at the junction becomes zero and an electric field is produced near junction. this region is called depletion layer. Thickness of depletion layer is of the order of 10^(-6) meter. in forward bias p terminal is connected with the positive terminal of cell and n is connected with negative terminal of cell and n is connected with negative terminal of cell. as forward voltage is increased, current increases exponentially. Correct graph for variation of charge density with distance from the junction is

Assertion : Zener diode is used to obtain voltage regulation Reason : When Zener diode is operated in reverse bias, after a certain voltage (breakdown voltage) the current suddenly increases.

For a reverse bias P-N junction-

Why photodiodes are required to operate in reverse bias explain.

A 2V battery may be connected across the points A and B as shown in figure. Assume that the resistance of each diode is zero in forward bias and infinity in reverse bias.Find the current supplied by the battery if the positive terminal of the battery is connected to (a) the point A (b)the point B.

When a junction diode is reverse biased, then current called drift current is due to