When a pentavalent impurity is added to a pure semiconductor, it becomes ………

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When a pentavalent impurity is added to a pure semiconductor, it becomes n-type semiconductor.

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Related questions

Addition of pentavalent impurity to a semiconductor creates many ……..

Last Answer : Addition of pentavalent impurity to a semiconductor creates many Free electrons.

Impurity atoms to be added to pure silicon in order to make a p-type semiconductor belongs to

Description : Impurity atoms to be added to pure silicon in order to make a p-type semiconductor belongs to (a) Phosphorous (b) Boron (c) Antimony (d) Aluminium 

Last Answer : Boron  , a  group  three  element.

A pentavalent impurity has ………. Valence electrons

Last Answer : A pentavalent impurity has 5 Valence electrons.

The impurity level in an extrinsic semiconductor is about ….. of pure semiconductor.

Last Answer : The impurity level in an extrinsic semiconductor is about 1 atom for 108 atoms of pure semiconductor.

In n type semi conductor added impurity is (A) pentavalent. (B) divalent. (C) tetravalent. (D) trivalent.

Description : In n type semi conductor added impurity is (A) pentavalent. (B) divalent. (C) tetravalent. (D) trivalent.

Last Answer : (A) pentavalent.

Addition of trivalent impurity to a semiconductor creates many ……..

Last Answer : Addition of trivalent impurity to a semiconductor creates many Holes.

In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity. (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will do.

Description : In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity. (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will do.

Last Answer : (A) Trivalent impurity.

The process of addition of impurity in pure semiconductor is : a) Doping b) Radiating c) Mixing d) Insulating

Description : The process of addition of impurity in pure semiconductor is : a) Doping b) Radiating c) Mixing d) Insulating

Last Answer : d) Insulating

As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ………..

Last Answer : As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor Decreases.

When a pure semiconductor is heated, its resistance …………..

Last Answer : When a pure semiconductor is heated, its resistance Goes down.

Explain types of impurity added in a semiconductor with one example each.

Description : Explain types of impurity added in a semiconductor with one example each.

Last Answer : There are two types of impurities added in a intrinsic semiconductor which are as follows 1.Donor Impurity 2.Acceptor Impurity 1.Donor Impurity - These are pentavalent which means they have five ... called as Acceptor doping. It is used to manufacture P-type semiconductor Eg:Boron,Gallium,Indium

Semiconductor germanium and silicon are (a) Pentavalent (b) trivalent (c) divalent (d) tetravalent

Description : Semiconductor germanium and silicon are (a) Pentavalent (b) trivalent (c) divalent (d) tetravalent

Last Answer : (d) tetravalent

Which of the following serves as donor impurity in Silicon?

Description : Which of the following serves as donor impurity in Silicon?  (A) Boron (B) Indium (C) Germanium (D) Antimony 

Last Answer : Which of the following will serve as a donor impurity in silicon?   (A) Boron (B) Indium (C) Germanium (D) Antimony

A trivalent impurity has ….. valence electrons

Last Answer : A trivalent impurity has 3 valence electrons.

When Arsenic atoms are added Germanium lattice, it becomes a/an - (1) Insulator (2) Superconductor (3) Intrinsic semiconductor (4) Extrinsic semiconductor

Description : When Arsenic atoms are added Germanium lattice, it becomes a/an - (1) Insulator (2) Superconductor (3) Intrinsic semiconductor (4) Extrinsic semiconductor

Last Answer : (4) Extrinsic semiconductor Explanation: When a peritavalent (donor) impurity, like arsenic, is added to germanium, it will form covalent bonds with thegermanium atoms, leaving 1 electron relatively ... this manner - either with Nor P-type impurities - are referred to as EXTRINSIC semiconductors.

When Arsenic atoms are added to Germanium lattice, it becomes a/an (1) Insulator (2) Superconductor (3) Intrinsic semiconductor (4) Extrinsic semiconductor

Description : When Arsenic atoms are added to Germanium lattice, it becomes a/an (1) Insulator (2) Superconductor (3) Intrinsic semiconductor (4) Extrinsic semiconductor

Last Answer : Extrinsic semiconductor

A semiconductor formed by addition of trivalent impurity is : a) P–Type b) N–Type c) Q–type d) M–Type

Description : A semiconductor formed by addition of trivalent impurity is : a) P–Type b) N–Type c) Q–type d) M–Type

Last Answer : d) M–Type

Addition of trivalent impurity to a semiconductor creates many (A) holes. (B) free electrons. (C) valance electrons. (D) bound electrons.

Description : Addition of trivalent impurity to a semiconductor creates many (A) holes. (B) free electrons. (C) valance electrons. (D) bound electrons.

Last Answer : (B) free electrons.

When a semiconductor is doped with a P-type impurity, each impurity atom will (A) acquire negative charge. (B) acquire positive charge. (C) remain electrically neutral. (D) give away one electron.

Description : When a semiconductor is doped with a P-type impurity, each impurity atom will (A) acquire negative charge. (B) acquire positive charge. (C) remain electrically neutral. (D) give away one electron.

Last Answer : (A) acquire negative charge.

In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room

Description : In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: A) Half the total number of electrons in the crystal B) Zero C) Half the number of atoms in the crystal D) Half the number of free electrons in the crystal

Last Answer : In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: Zero 

In an n-type semiconductor, as the donor concentration ND increases, the Fermi level EF:

Description : In an n-type semiconductor, as the donor concentration ND increases, the Fermi level EF: (1) Remains unaltered (2) Moves towards the conduction band (3) Move towards the center of forbidden energy gap (4) May or may not move depending on temperature 

Last Answer : In an n-type semiconductor, as the donor concentration ND increases, the Fermi level EF: Moves towards the conduction band

The advantage of a semiconductor strain gauge cover the wire round strain gauge is that

Description : The advantage of a semiconductor strain gauge cover the wire round strain gauge is that

Last Answer : The advantage of a semiconductor strain gauge cover the wire round strain gauge is that it is more sensitive

The semiconductor used for LEDs emitting in the visible range is

Description : The semiconductor used for LEDs emitting in the visible range is  (a) GaAs (b) GaAlAs (c) GalnAs (d) GaAsP

Last Answer : The semiconductor used for LEDs emitting in the visible range is GaAsP

The polar bonds existing in III-V compound semiconductor, may be considered as equivalent to

Description : The polar bonds existing in III-V compound semiconductor, may be considered as equivalent to  (a) 1 ionic bond and 3 covalent bonds (b) 1 ionic bond and 4 covalent bonds (c) 2 ionic bonds and 2 covalent bonds (d) 2 ionic bonds and 4 covalent bonds

Last Answer : The polar bonds existing in III-V compound semiconductor, may be considered as equivalent to 1 ionic bond and 3 covalent bonds

The material used for ‘doping’ to prepare N - type semiconductor is

Description : The material used for ‘doping’ to prepare N - type semiconductor is

Last Answer : The material used for ‘doping’ to prepare N - type semiconductor is Arsenic

While comparing doped semiconductor vs. un-doped semiconductor, which of the following

Description : While comparing doped semiconductor vs. un-doped semiconductor, which of the following statements is NOT true ? (A) Doped semiconductor has smaller band-gap compared to un-doped semiconductor (B) ... to un-doped semiconductor (D) Doped as well as un-doped semiconductor have equal bandwidth

Last Answer : While comparing doped semiconductor vs. un-doped semiconductor, which of the following statements is NOT true ? (A) Doped semiconductor has smaller band-gap compared to un-doped semiconductor (B) ... to un-doped semiconductor (D) Doped as well as un-doped semiconductor have equal bandwidth

To increase mobility of electron in a given piece of semiconductor

Description : To increase mobility of electron in a given piece of semiconductor (A) Increase overall size of the semiconductor (B) Increase length (C) Increase width (D) Small increase in temperature above room temperature value

Last Answer : To increase mobility of electron in a given piece of semiconductor Small increase in temperature above room temperature value

At absolute temperature, an intrinsic semiconductor has ……….

Last Answer : At absolute temperature, an intrinsic semiconductor has No holes or free electrons.

At room temperature, an intrinsic semiconductor has ……….

Last Answer : At room temperature, an intrinsic semiconductor has A few free electrons and holes.

In an intrinsic semiconductor, the number of free electrons ………

Last Answer :  In an intrinsic semiconductor, the number of free electrons Equals the number of holes.

When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on……

Last Answer : When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on Minority carriers.

In a semiconductor, current conduction is due to ……..

Last Answer : In a semiconductor, current conduction is due to Holes and free electrons.

A hole in a semiconductor is defined as …………….

Last Answer : A hole in a semiconductor is defined as The incomplete part of an electron pair bond.

An n-type semiconductor is ………

Last Answer : An n-type semiconductor is Electrically neutral.

The strength of a semiconductor crystal comes from ……..

Last Answer : The strength of a semiconductor crystal comes from Electron-pair bonds.

The most commonly used semiconductor is ………..

Last Answer : The most commonly used semiconductor is Silicon.

A semiconductor has ………… temperature coefficient of resistance.

Last Answer : A semiconductor has Negative temperature coefficient of resistance.

When a detergent is added to pure water, its surface tension – (1) increases (2) decreases (3) remains constant (4) becomes infinite

Description : When a detergent is added to pure water, its surface tension – (1) increases (2) decreases (3) remains constant (4) becomes infinite

Last Answer : (2) decreases Explanation: When Soaps and detergents are added to water, they weaken the strength of the skin on the water's surface due to surface tension by interfering with hydrogen bonding ... of the soap or detergent is also attracted to the water, thereby decreasing the surface tension.

When a detergent is added to pure water, its surface tension (1) increases (2) decreases (3) remains constant (4) becomes infinite

Description : When a detergent is added to pure water, its surface tension (1) increases (2) decreases (3) remains constant (4) becomes infinite

Last Answer : decreases

Pure silicon is

Description : Pure silicon is (a) a p-type semiconductor (b) an n-type semiconductor (c) an intrinsic semiconductor (d) an extrinsic semiconductor 

Last Answer : Pure  silicon  is  an  intrinsic  semiconductor because  its  own  electrons   are  responsible   for   conduction.

If the iron ore contains clay as an impurity, the flux added during calcination, is (A) Clay (B) Lime stone (C) Argillaceous iron ore (D) All the above

Description : If the iron ore contains clay as an impurity, the flux added during calcination, is (A) Clay (B) Lime stone (C) Argillaceous iron ore (D) All the above

Last Answer : Answer: Option B

What is the Different between a pentavalent atom and a trivalent atom?

Description : What is the Different between a pentavalent atom and a trivalent atom?

Last Answer : Feel Free to Answer

Give two examples of trivalent and pentavalent impurities.

Description : Give two examples of trivalent and pentavalent impurities.

Last Answer : Trivalent Impurities:  1) Gallium (Ga) 2) Indium (In) 3) Aluminium (Al) 4) Boron (B)  Pentavalent Impurities:  1) Phosphorus (P) 2) Antimony (Sb) 3) Arsenic (As) 4) Bismuth (Bi)

What is an intrinsic semiconductor or pure semiconductor?

Description : What is an intrinsic semiconductor or pure semiconductor?

Last Answer : A semiconductor in which the number of holes and electrons are equal is called intrinsic orpure semiconductor.

What is the name given to a piece of pure semiconductor material that has an equal number of electrons and holes?

Description : What is the name given to a piece of pure semiconductor material that has an equal number of electrons and holes?

Last Answer : Intrinsic.

A pure semiconductor under ordinary conditions behaves like (A) a conductor. (B) an insulator. (C) a magnetic material. (D) a ferro-electric material.

Description : A pure semiconductor under ordinary conditions behaves like (A) a conductor. (B) an insulator. (C) a magnetic material. (D) a ferro-electric material.

Last Answer : (B) an insulator.

At very high temperatures, extrinsic semiconductor becomes intrinsic semiconductor because

Description : At very high temperatures, extrinsic semiconductor becomes intrinsic semiconductor because (A) Of drive in diffusion of dopants & carriers. (B) Band to band transition dominates impurity ionization. (C) ... band to band transition. (D) Band to band transition is balanced by impurity ionisation.

Last Answer : At very high temperatures, extrinsic semiconductor becomes intrinsic semiconductor because Impurity ionization dominates band to band transition.

Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials (C) Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Description : Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft ... hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Last Answer : Option D

Besides drinking pure (no sugar added) Cranberry juice and a crapload of water, is there any way to take care of a bladder infection, so, that it will disappear?

Description : Besides drinking pure (no sugar added) Cranberry juice and a crapload of water, is there any way to take care of a bladder infection, so, that it will disappear?

Last Answer : Cranberry caplets are available where vitamins are sold. It's like drinking lots and lots of the juice, but without having to taste it. I recommend them, but this is not medical advice. :) Let's just say it ... of them all day, though - but that's as good as it gets for home remedies. Good luck.