Home
Class 12
PHYSICS
Explain briefly with the help of necessa...

Explain briefly with the help of necessary diagram, the forward and the reverse biasing of p-n junction diode. Also draw their characteristic curves in the two cases.

Text Solution

Verified by Experts

Forward Bias

In forward bias P junction is connected to +ve of emf and n with -ve, so that electric current flow due to majority carrier constituting forward current. Small increase in forward voltage show large increase in forward current so resistance is low. Depletion layer width decrease and barrier height is reduced .
In reserve bias, `P` sideof junction is connected to - ve of the battery and n with positive. This cause effective barrier voltage enhancement `V_(B) + V`.
Resistance of `P-n` junction in reserve bias is high .
Promotional Banner

Topper's Solved these Questions

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise [SET -II, OUTSIDE DELHI]|9 Videos

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise [SET -III, OUTSIDE DELHI]|5 Videos

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise SET-II DELHI BOARD (SEC-C)|5 Videos

  • SAMPLE PAPER 2019

    XII BOARDS PREVIOUS YEAR|Exercise SECTION D|6 Videos

Similar Questions

Explore conceptually related problems

What is the ratio of forward and reverse resistance of p-n junction diode?

In forward biasing of the p-n junction:

Distinguish clearly between forward biasing and reverse biasing of p-n junction.

The approximate ratio of resistance in the forward and reverse biase of the PN- junction diode is