The drift current in a p-n junction is 2...

The drift current in a p-n junction is `2.0(mu)A`. Estimate the number of electrons crossing a cross section per second in the depletion region.

Text Solution

Verified by Experts

Given Drift Current ` = 20muA`
` = 20xx10^(-6)A.`
Both holes and electrons are moving
So,number of electrons
`(20xx10^(-6))/(2xx1.6xx10^(-19)) = 6.25xx10^13`

Topper's Solved these Questions

SEMICONDUCTOR AND SEMICONDUCTOR DEVICES
HC VERMA|Exercise objective II|1 Videos
PHOTOMETRY
HC VERMA|Exercise Exercises|16 Videos
SPEED OF LIGHT
HC VERMA|Exercise Exercises|3 Videos

Similar Questions

Explore conceptually related problems

The depletion region of a p-n junction contains :-

If the proportion of impurity increases in semiconductor in p-n junction then depletion region ……….

The current through a wire depends on time as i=(2+3t)A . Calculate the charge crossed through a cross section of the wire in 10sec.

The depletion layer in the p-n junction region is caused by ……

The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. The number of electrons stricking the target per second is ...... (Take e=1.6xx10^(-19)C)

If a number of electrons pass through the cross-section of a conductor in time t, what is the electric current flowing through it?

If current in given circuit is 0.1 A then calculate resistance of P-N junction.

The radius of a pipe decreases according to r=r_(o)e^(-propx) , where alpha=0.50m^(-1)andx is the distance of a cross - section from the first end (x=0) . Find the ratio of Reynolds number for two cross -sections lying at the distance of 2m from each other . (take e=2.718)

The potential barrier of 0.5 V exist across a p-n junction. If the dpletion region is 5.0xx10^(-7)m wide, then the intensity of electric field in this region is ………….

There is a current of 40 ampere in a wire of 10^(-6)m^(2) are of cross-section. If the number of free electron per m^(3) is 10^(29) then the drift velocity will be

HC VERMA-SEMICONDUCTOR AND SEMICONDUCTOR DEVICES-Exercises

In a p-n junction, the depletion region is 400nm wide and and electric...
Text Solution
|
The potential barrier exists across the junction is 0.2volt.What minim...
Text Solution
|
In a p-n junction,a potential barrier of 250 mev exsists across the ju...
Text Solution
|
When a p-n junction is reverse-biased,the current becomes almost const...
Text Solution
|
The drift current in a p-n junction is 2.0(mu)A. Estimate the number o...
Text Solution
|
The current-voltage characteristic of an ideal p-n junction diode is g...
Text Solution
|
Consider a p-n junction diode having the characterstic i=i0(e^eV//kT-1...
Text Solution
|
Calculate the current through the circuit and the petential difference...
Text Solution
|
Each of the resistance shown in figure has a value of 20 Omega.Find th...
Text Solution
|
Find the current through the resistance in the circuits shown in figur...
Text Solution
|
What are the readings of the ammeterA1and A2shown in figure.Neglect th...
Text Solution
|
Find the curent through the battery in each of the circuit shown in fi...
Text Solution
|
Find the current through the resistance R in figure.If (a)R=12 Omega(b...
Text Solution
|
Draw the current-voltage characteristics for the device shown in figur...
Text Solution
|
Find the equivalent resistance of the network shown in figure
Text Solution
|
When the base current in a transistor is changed from 30 mu Ato 80 mu ...
Text Solution
|
A load resistor of 2 k Omega is connected in the collector branch of a...
Text Solution
|
Let X=A bar(BC)+B bar(CA)+C bar(AB).Evalute X for (a)A=1,B=0,C=1 ...
Text Solution
|
Design a logical circuit using AND, OR and NOT gates to evaluate A bar...
Text Solution
|
Show that AB+bar(AB)is always 1.
Text Solution
|