To make a PN junction conducting, | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) $PN$ junction diode acts as a conductor when it is forward-biased.In forward bias,the positive terminal of the battery is connected to the $P$-reg

Vedclass · Accepted Answer

The value of forward bias should be more than the barrier potential.

Vedclass · Answer

(A) $PN$ junction diode acts as a conductor when it is forward-biased.In forward bias,the positive terminal of the battery is connected to the $P$-region and the negative terminal to the $N$-region.This reduces the width of the depletion layer and the height of the potential barrier.For significant current to flow,the applied forward bias voltage must exceed the barrier potential (which is approximately $0.7 \ V$ for Silicon and $0.3 \ V$ for Germanium).Therefore,the correct condition is that the forward bias should be greater than the barrier potential.

To make a $PN$ junction conducting,

Similar Questions

In the circuit shown in the figure,the non-zero potential difference across diode $D_{1}$ and that across diode $D_{2}$ are equal. Are the diodes identical in characteristics? Explain.

For using a multimeter to identify a diode from electrical components,choose the correct statement about the diode from the following:

In a $p-n$ junction diode, the thickness of the depletion layer is $2 \times 10^{-6} \,m$ and the barrier potential is $0.3 \,V$. The intensity of the electric field at the junction is

In a $P-N$ junction,when the current value increases,the contact potential ..........

Write the formula and definition of dynamic resistance and also state their approximate values for forward bias and reverse bias.

Vedclass Test Series

Exam Paper Generator

Online Exam Module