A semiconductor X is made by dopping a g...

A semiconductor `X` is made by dopping a germanium crystal with arsenic `(Z=33)`. A scond semiconductor `Y` is made by dopping germanium with indium `(Z=49)`. The two are joined end to end and connected to a battery as shown. Which of the following statements is correct?

X is p-type, Y is n-type and the junction is forward biased

X is n-type, Y is p-type and the junction is forward biased

X is p-type, Y is n-type and the junction is reverse biased

X is n-type, Y is p-type and the junction is reverse biased

Text Solution

Verified by Experts

The correct Answer is:

Arsenic is pentavalent.
`therefore` X becomes an n-type germanium semiconductor.
Indium is trivalent hence Y becomes a p-type Ge semiconductor.
n and p are connected to the positive and negative terminals of the cell respectively. Hence it is a reversed biased p-n junction.

Topper's Solved these Questions

ROTATIONAL MOTION
MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 3|8 Videos
STATIONARY WAVES
MARVEL PUBLICATION|Exercise TEST YOUR GRASP-8|20 Videos

Similar Questions

Explore conceptually related problems

A semiconductor material x is made by doping a germanium crystal with indium another semiconductor material y is made by doping a x nad y ar then joined together and connected to a battery will the jucntion be forward or reverse biased also draw the V-I characteristics for the circuit

Sohan connects three identical bulbs X, Y and Z as shown in the figure. Which of the following statements is correct?

Two semiconductor materials X and Y shown in the given figure, are made by doping germanium crystal with indum and arsenic respectively. The two are joined end to end and connected to a battery as shown. (i). Will the junction be forward biased or reverse biased.? (ii). Sketch a V-I graph for this arrangement.

A battery and three lamps are connected as shown: Which of the following statements about the currents at X,Y and Z is correct?

A rod is made of uniform material and has non-uniform cross section. It is fixed at both the ends as shown and heated at mid-section. Which of the following are not correct?

Let P_(1):2x+y-z=3" and "P_(2):x+2y+z=2 be two planes. Then, which of the following statement(s) is (are) TRUE?

MARVEL PUBLICATION-SEMICONDUCTORS -MCQs

A semiconductor diode and a resistor of constant resistance are connec...
Text Solution
|
Which circuit will not show current in ammeter ?
Text Solution
|
A semiconductor X is made by dopping a germanium crystal with arsenic ...
Text Solution
|
What is the value of D.C. voltage in a half wave rectifier in converti...
Text Solution
|
In the given circuit The current through the battery is
Text Solution
|
Which one of the following is the correct statement regarding the depl...
Text Solution
|
The circuit shown in figure (1) Contains two diodes each with a forwar...
Text Solution
|
For the given circuit of PN-junction diode, which of the following sta...
Text Solution
|
Colour of light emitted by LED depends upon
Text Solution
|
A general purpose diode is more likely to suffer avalanche breakdown r...
Text Solution
|
State the reason, why GaAs is most commonly used in making of a solar ...
Text Solution
|
A solar cell works on the principle of
Text Solution
|
Silicon and Germanium p-n junction diodes are not used for making LEDs
Text Solution
|
A light emining diode is shown as
Text Solution
|
A p-n photodiode is made of a material with a band gap of 2.0 eV. The ...
Text Solution
|
Consider the following statements A and B and identify the correct ans...
Text Solution
|
In a circuit a diode was used and the output voltage across the diode ...
Text Solution
|
What is the value of output voltage V(0) in the circuit shown in the f...
Text Solution
|
What is the load current in the following zener circuit?
Text Solution
|
Light emitting diodes are used in 'alphanumeric' displays of advertise...
Text Solution
|