In an n-type silicon, which of the following statement is true:
In an n-type silicon, which of the following statement is true:
Electrons are majority carriers and trivalent atoms are the dopants.
Electrons are minority carriers and pentavalent atoms are the dopants.
Holes are minority carriers and pentavalent atoms are the dopants.
Holes are majority carriers and trivalent atoms are the dopants.
The Correct Option is C
Solution and Explanation
In an n-type silicon, the electrons are the majority carriers, while the holes are the minority carriers. An n-type semiconductor is obtained when pentavalent atoms, such as phosphorus, are doped in silicon atoms.
Therefore, the correct statement is (c).
Top Questions on Semiconductor electronics: materials, devices and simple circuits
- Draw a neat and labelled circuit diagram for a full wave rectifier.
- Maharashtra Class XII - 2025
- Physics
- Semiconductor electronics: materials, devices and simple circuits
Assertion (A): We cannot form a p-n junction diode by taking a slab of a p-type semiconductor and physically joining it to another slab of an n-type semiconductor.
Reason (R): In a p-type semiconductor, \( n_e \gg n_h \) while in an n-type semiconductor \( n_h \gg n_e \).
- CBSE CLASS XII - 2025
- Physics
- Semiconductor electronics: materials, devices and simple circuits
The graph shows the variation of current with voltage for a p-n junction diode. Estimate the dynamic resistance of the diode at \( V = -0.6 \) V.
- CBSE CLASS XII - 2025
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- Draw circuit arrangement for studying V-I characteristics of a p-n junction diode.
(b) Show the shape of the characteristics of a diode.
(c) Mention two information that you can get from these characteristics.- CBSE CLASS XII - 2025
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- Explain the classification of conductors, insulators and semiconductors on the basis of energy bands.
- UP Board XII - 2025
- Physics
- Semiconductor electronics: materials, devices and simple circuits
Questions Asked in CBSE CLASS XII exam
- Find the absolute maximum and absolute minimum of the function \( f(x) = 2x^3 - 15x^2 + 36x + 1 \) on \( [1, 5] \).
- CBSE CLASS XII - 2025
- Absolute maxima and Absolute minima
- An electric dipole consists of charges \(\pm 4 \mu C\) separated by a distance of \(6\,cm\). Calculate the electric field at a point on the axial line at a distance \(20\,cm\) from its center.
- If \( x = a \left( \cos \theta + \log \tan \frac{\theta}{2} \right) \) and \( y = \sin \theta \), then find \( \frac{d^2y}{dx^2} \) at \( \theta = \frac{\pi}{4} \).
- CBSE CLASS XII - 2025
- Derivatives
- Find the intervals in which the function $f(x) = 5x^3 - 3x^2$ is (i) increasing (ii) decreasing.
- CBSE CLASS XII - 2025
- Derivatives
- Find : \[ I = \int \frac{x + \sin x}{1 + \cos x} \, dx \]
- CBSE CLASS XII - 2025
- Integration
Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.