The conduction of electricity, in semiconductors, takes place due to movement of

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The conduction of electricity, in semiconductors, takes place due to movement of electrons and holes.

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In conductors conduction of electricity takes place due to movement of

Last Answer : In conductors conduction of electricity takes place due to movement of electrons only.

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Last Answer : An acceptor is an element used in semiconductors whose atoms have three valence electrons.

The impurity atoms is semiconductors?

Last Answer : The impurity atoms is semiconductors reduce the energy gap.

Pick out the wrong statement. (A) Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection (B) The ratio NNu /NRe . Npr is called the Stanton number (C) The Peclet number is a measure of the ratio of energy transport by convection to that by conduction (D) The Colburn jH factor for heat transfer is given by Nst Npr

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Last Answer : (D) The Colburn jH factor for heat transfer is given by Nst Npr

Unit for quantity of electricity is

Last Answer : Unit for quantity of electricity is coulomb.

Water conduction takes place in mosses through – (1) Xylem and Phloem (2) Xylem (3) Collenchyma (4) Parenchyma

Description : Water conduction takes place in mosses through – (1) Xylem and Phloem (2) Xylem (3) Collenchyma (4) Parenchyma

Last Answer : (4) Parenchyma Explanation: Botanically, mosses are nonvascular plants that absorb water and nutrients mainly through their leaves and harvest carbon dioxide and sunlight to create food by photosynthesis. ... They do not have a welldeveloped xylem. Their conducting tissue is made up of parenchyma.

Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of- (1) Convection only (2) Conduction and convection only (3) Radiation and convection only (4) Convection, conduction and radiation

Description : Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of- (1) Convection only (2) Conduction and convection only (3) Radiation and convection only (4) Convection, conduction and radiation

Last Answer : (3) Radiation and convection only Explanation: Conduction is the transfer of heat energy by direct contact, convection is the movement of heat by actual motion of matter; radiation is the transfer of energy with the help of electromagnetic waves.

Conduction of food from leaves to differ- ent plants parts takes place through?

Description : Conduction of food from leaves to differ- ent plants parts takes place through?

Last Answer : Phloem

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Description : Depolarization of axolemma during nerve conduction takes place because of (a) equal amount of Na+ and K+ move out across axolemma (b) Na+ move inside and K+ move more outside (c) more Na+ outside (d) none of these.

Last Answer : (b) Na+ move inside and K+ move more outside

In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted

Description : In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted

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Water conduction takes place in mosses through (1) Xylem and Phloem (2) Xylem (3) Collenchyma (4) Parenchyma

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Depending on the method of conduction of electricity, the electric conductor can be divided into how many parts ?

Description : Depending on the method of conduction of electricity, the electric conductor can be divided into how many parts ?

Last Answer : Depending on the method of electric transport, electric conductors can be divided into two main categories- 1. Electronic or metallic conductor (electrolytic) 2. Electrolytic or electrolytic conductor

State the types of conduction of electricity.

Description : State the types of conduction of electricity.

Last Answer : a) Metallic conduction b) Electrolytic conduction

Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place (A) Between two bodies in physical contact with each other (B) Between two bodies not in physical contact with each other (C) From one part of a body to the another part of the same body (D) Both 'b' & 'c'

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A process by which heat is transferred through a material without a bulk movement of the material.  a. Convection  b. Conduction  c. Radiation  d. Emission

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Last Answer : Conduction

Surface resistance of an insulating material is reduced due to the

Last Answer : Surface resistance of an insulating material is reduced due to the smoky and dirty atmosphere, humidity in the atmosphere.

The conductors have transport phenomena of electrons due to

Description : The conductors have transport phenomena of electrons due to

Last Answer : The conductors have transport phenomena of electrons due to electric field.

The superconductivity is due to

Description : The superconductivity is due to

Last Answer : The superconductivity is due to the crystal structure having no atomic vibration at 0°K.

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How does the movement of substances takes place in the cell ? -Biology

Description : How does the movement of substances takes place in the cell ? -Biology

Last Answer : Some substances like carbon dioxide or oxygen can move across the cell membrane by a process called diffusion.

Downward movement of food synthesized in leaves takes place through

Description : Downward movement of food synthesized in leaves takes place through

Last Answer : Ans. Phloem

During Osmosis, movement of water takes place from

Description : During Osmosis, movement of water takes place from

Last Answer : Ans. Lower to higher concentration of solution

Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids (C) Particles movement from higher concentration to lower concentration takes place in diffusion process (D) According to Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

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Photovoltaic cells are semiconductors of

Description : Photovoltaic cells are semiconductors of

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Assertion : Zone refining method is very useful for producing semiconductors. Reason : Semiconductors are of high purity.

Description : Assertion : Zone refining method is very useful for producing semiconductors. Reason : Semiconductors are of high purity.

Last Answer : Assertion : Zone refining method is very useful for producing semiconductors. Reason : Semiconductors are of high purity.

What are the semiconductors in the periodic table?

Description : What are the semiconductors in the periodic table?

Last Answer : The ones adjacent to silicon.

What common element is used in semiconductors?

Description : What common element is used in semiconductors?

Last Answer : silicon

Why is silicon and germanium used in semiconductors.pdf?

Description : Why is silicon and germanium used in semiconductors.pdf?

Last Answer : Feel Free to Answer

What common element is used in semiconductors?

Description : What common element is used in semiconductors?

Last Answer : silicon

What are semiconductors made of?

Description : What are semiconductors made of?

Last Answer : Semi conducts are made of a crystalline (usually silicon) tube connected to two electrodes. See http://en.wikipedia.org/wiki/Diode

Which is used for manufacturing chips? A) Bus B) Control unit C) Semiconductors D) A and b only

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When two semiconductors of p-and ntype are brought in contact, they form p-n junction which acts like a/an – (1) Conductor (2) Oscillator (3) Rectifier (4) Amplifier

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Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

Description : Silicon is used in which of the following? (1) Semiconductors (2) solar energy devices (3) transistors (4) All of these

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What are semiconductors?

Description : What are semiconductors?

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Description : How are extrinsic semiconductors classified?

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Give reason: a) 14th group electrons are semiconductors except carbon.

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What is the reason for the conductivity of semiconductors?

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Last Answer : Semiconductors require a small amount of energy to break the covalent bond to set theelectron free. Thus as the temperature increases, the number of electrons dissociatedfrom their atoms increases. Thus semiconductors behave as conductors.

What are semiconductors? Give example.

Description : What are semiconductors? Give example.

Last Answer : Substances that have conductivity between that of conductors and insulators are called semiconductors. Example: Silicon, Germanium

Semiconductors have electron number density of order A. 1024 m-3 B. 1020 m-3 C. 1012 m-3 D. 1023 m-3

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Which is used for manufacturing chips? a. Bus b. Control unit c. Semiconductors d. A and b only

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The skin effect is a phenomenon observed in a) Insulators b) Dielectrics c) Conductors d) Semiconductors

Description : The skin effect is a phenomenon observed in a) Insulators b) Dielectrics c) Conductors d) Semiconductors

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Skin depth phenomenon is found in which materials? a) Insulators b) Dielectrics c) Conductors d) Semiconductors

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Semiconductors possess which type of bonding? a) Metallic b) Covalent c) Ionic d) Magnetic

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Dielectric constant will be high in a) Conductors b) Semiconductors c) Insulators d) Superconductors

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With increase in temperature, the electrical conductivity of semiconductors (A) Increases (B) Decreases (C) Remain constant (D) Either (A) or (B), depends on the type of semi-conductor

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Last Answer : Option A

. With increase in temperature, the electrical conductivity of semiconductors (A) Increases (B) Decreases (C) Remain constant (D) Either (A) or (B), depends on the type of semi-conductor

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State one requirement of an electron tube, which does not exist for semiconductors, that makes the tube less efficient than the semiconductor.

Description : State one requirement of an electron tube, which does not exist for semiconductors, that makes the tube less efficient than the semiconductor.

Last Answer : The electron tube requires filament or heater voltage, whereas the semiconductor device does not; consequently, no power input is spent by the semiconductor for conduction.

What is the primary advantage of bulk-effect devices over normal pn-junction semiconductors?

Description : What is the primary advantage of bulk-effect devices over normal pn-junction semiconductors?

Last Answer : Larger microwave power outputs.