What is transistor ? (when it is used, and why ?)

Q: What is a superconductor? Give one example of it.

A: A material that transfer electrons from one atom to another without the presence of resistance is a…

Q: Which region in a transistor is highly doped. Why?

A: SOltuion: Given that which region in the transistor are doped highly and why?

Q: Write short note about quazi crystal?

A: We have to write a short note about Quasicrystal.

Q: What us the free electron? Why is insulator non-conductive?

A: Answer Insulators are the material which does not allow electricity pass through it. Air, cloth,…

Q: A certain computer chip that is about the size of a postage stamp (2.54 cm * 2.22 cm) contains about…

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Q: A power transistor is a -2 .device a) two terminal, bipolar, voltage controlled b) two terminal,…

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Q: What do you mean by majority and minority carriers in extrinsic semiconductors?

A: A small amount of a suitable impurity is added to the pure semiconductor; the conductivity of the…

Q: How do the atoms of a solid move?

A: Atoms in a solid only shake back and forth in place. The reason is In the solid the particles the…

Q: A transistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board. The…

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Q: How many electrons in the outermost shell of an atom doe a good insulator have?

A: The insulator is the material which does not conducts electricity. The electricity is only conducts…

Q: 10. On which level within this parallel plate apparatus would an electron have the most potential…

A: Introduction: The given system forms the parallel plate capacitor whose energy can be obtained as…

Q: What is meant by ‘doping’ in a semiconductor?

A: To start the conduction of semiconductor, doping is necessary. How the semiconductor will conduct…

Q: distenguish between n-p-n and p-n-p transistors symbolically?

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Q: Using PNP transistor, draw the common base,common emitter and common collector .

A: Common Base (CB) PNP Common Emitter (CE) PNP

Q: can act sometimes as a conductor and sometimes as an insultor. O Insulator O Conductor O…

A: Semiconductors are materials that have electric conductivity in between conductors (usually metals)…

Q: Silicon is the chief ingredient of both glass and semiconductor devices, yet the physical properties…

A: The physical properties of any material depend upon the bonding between the atoms, order of the…

Q: The form of matter that is best for creating ideas is the solid state. Select one: O True OFalse

A: The matter is classified into three categories:- 1) Solid  2) Liquid 3) Gas The solid is the type of…

Q: poorest insulator materials are?

A: Insulator: The materials which are poor electrical conductors are called insulators.

Q: Give important properties of semiconductor.

A: The important properties of semiconductor are as follows;

Q: The current flowing into the base of a transistor is 10 pA. Find its emitter current, if the value…

A: Given data: Current flowing into the base is, IB=10 pA. Current gain is, β=100.

Q: Insulators also contain electrons, but they are not conductors, Why?

A: Insulators consist of atoms having tightly bound electrons. Whereas, conductors have free electrons.

Q: What is an intrinsic semiconductor?

A: The materials who are neither a conductor nor an insulator are semiconductors like Germanium,…

Q: The middle layer of a transistor is the base, it is doped and in size. moderately lightly heavily…

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Q: Which type of semiconductors are made by combining them with the elements of third column in the…

A: There are two types of semiconductor, Intrinsic semiconductor Extrinsic semiconductor Further…

Q: Do you think a material with little or no crystal structure (a "glass") could be superconducting? If…

A: Two condition to be a superconductivity: A superconductor is characterized by two features: the…

Q: How Laser works?

A: Answer:- Principle of laser :- Laser is produced by the energy released by electrons moving from…

Q: What are Extrinsic Semiconductors?

A: The impure semiconductor is known as an extrinsic semiconductor.

Q: Do atoms ever actually touch each other?

A: The  atom consists of three particles: protons electrons neutrons In the nucleus of atom there are…

Q: Why the electrons in fermi level not absorb energy??

A: Fermi level is the term used to describe the top of the collection of electron energy levels at…

Q: Write short note about thin film?

A: Thin film ; Thin film is a layer of a material which ranges from the fractions of a nanometer to…

Q: In a transistor if a = 100 and emitter current is 10mA, then Ic is A. 100 mA В. 10mA C. 100.1 mA D.…

A: Given Data : The emitted current for the transistor is given as Ie=10mA The alpha factor for the…

Q: What do you mean by an extrinsic semiconductor?

A: An extrinsic semiconductor is a semiconductor that is doped by the specific impurity, that is called…

Q: What is a transistor composed of , and what are some of its function?

A: Transistors containing layer of semiconductor material. They are used to control flow of currents in…

Q: A silicon atom is more massive than a sodium atom. Why then is a sodium atom larger in size?

A: Step 1Across the periodic table, there is a simple trend that from left to right the size of an atom…

Q: What is a transistor composed of, and what are some of its functions?

A: Transistors: They are composed of the thin layers of the semiconductor materials.

Q: what is the process of doping and why doping increases the conductivity of a semiconductor?

A: Doping is process of adding impurities in pure or intrinsic semiconductor in order to change…

Q: When two identical resistors(say 4 ohm each)Are connected in parallel to a 12 V car…

A: Resistance are connected in parallel, so, Total resistance, R=4×44+4=2 Ω (a) Since resisters are…