Write down the difference between forward bias and reverse bias o… - Vidyadip

Question

Write down the difference between forward bias and reverse bias of $p-n$ junction diode.

✓

Answer

Forward Bias	Reverse Bias
$p$ - type semiconductor of $p-n$ junction is connected to positive terminal and $n$ - type is connected with negative terminal of battery. Such a biasing is called forward biasing.	$p$ - type semiconductor of $p-n$ junction is connected to negative terminal and $n$ - type is connected with positive terminal of battery. Such a biasing is called reverse biasing.
In forward bias, the current is due to majority charge carriers.	In Reverse bias, the current is due to minority charge carriers.
Current obtained in forward bias is of the order of $m A$.	Current obtained in Reverse bias is of the order of $\mu A$.
When diode is connected in forward bias, width of its depletion layer and height of potential barrier reduces.	When diode is connected in reverse bias, width of its depletion layer and height of potential barrier increases.
Resistance is of the order of $10 \Omega$ to $100 \Omega$.	Resistance is of the order of $10 M \Omega$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Short Answer Type Questions [2M]" from SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS→SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

Can a gravitational field be added vectorially to an electric field to get a total field?

Give the sign convection for electric or magnetic field leaving and entering the plane of the paper.

Plot a graph showing variation of de-Broglie wavelength $\lambda$ versus $\frac{1}{\sqrt{V}} ,$ where V is accelerating potential for two particles A and B carrying same charge but of masses m₁, m₂ (m₁ > m₂). Which one of the two represents a particle of smaller mass and why?

Two stable isotopes of lithium $^6_3\text{Li }\text{ and }\ ^7_3\text{Li}$ have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium.

The magnetic force depends on v which depends on the inertial frame of reference. Does then the magnetic force differ from inertial frame to frame? Is it reasonable that the net acceleration has a different value in different frames of reference?

The wavelength $\lambda$ of a photon and the de-Broglie wavelength of an electron have the same value. Show that energy of a photon is (2$\lambda$mc/h) times the kinetic energy of electron; where m, c and h have their usual meaning.

Things to keep in mind to get the image formed by the lens.

A block of mass 2kg is pushed against a rough vertical wall with a force of 40N, coefficient of static friction being 0.5. Another horizontal force of 15N, is applied on the block in a direction parallel to the wall. Will the block move? If yes, in which direction? If no, find the frictional force exerted by the wall on the block.

A resistance is connected to an AC source. If a capacitor is included in the series circuit, will the average power absorbed by the resistance increase or decrease? If an inductor of small inductance is also included in the series circuit, will the average power absorbed increase or decrease further?

In some old texts it is mentioned that $4\pi$ lines of force originate from each unit positive charge. Comment on the statement in view of the fact that $4\pi$ is not an integer.