If the temperature of a semiconductor rises, what is its resistivity?

If the temperature of a semiconductor rises, what is its resistivity?
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– Decrease
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If the temperature of a semiconductor rises, what is its resistivity? -General Knowledge

Description : If the temperature of a semiconductor rises, what is its resistivity? -General Knowledge

Last Answer : The answer is 'Decrease'

If the temperature of a semiconductor rises, what is its resistivity? -General Knowledge

Description : If the temperature of a semiconductor rises, what is its resistivity? -General Knowledge

Last Answer : answer:

If the temperature of a semiconductor rises, what is its resistivity?

Description : If the temperature of a semiconductor rises, what is its resistivity?

Last Answer : Decrease

The temperature (T) dependence of resistivity (rho) of a semiconductor is represented by :

Description : The temperature (T) dependence of resistivity (rho) of a semiconductor is represented by :

Last Answer : The temperature (T) dependence of resistivity (rho) of a semiconductor is represented by : A. B. C. D.

Which of the listed conditions describes the effect on intrinsic semiconductor operation as a result of a temperature increase? A. Additional heat sinks will be required B. Conductivity will increase C. Conductivity will decrease D. Resistivity will increase

Description : Which of the listed conditions describes the effect on intrinsic semiconductor operation as a result of a temperature increase? A. Additional heat sinks will be required B. Conductivity will increase C. Conductivity will decrease D. Resistivity will increase

Last Answer : Answer: B

The resistance of a conductor is inversely proportional to its - (1) temperature (2) resistivity (3) area of cross section (4) length

Description : The resistance of a conductor is inversely proportional to its - (1) temperature (2) resistivity (3) area of cross section (4) length

Last Answer : (3) area of cross section Explanation: The resistance of a current carrying conductor is inversely proportional to the area of cross section of the conductor. This is because the resistance occurs due to the collision of electrons/charged particles.

When temperature rises, resistance of negative temperature coefficient thermistor A. increases B. decreases C. zero D. infinity

Description : When temperature rises, resistance of negative temperature coefficient thermistor A. increases B. decreases C. zero D. infinity

Last Answer : decreases

Ten calories of heat are added to 2 grams of water. The temperature of the water rises to a total of how many degrees? Is it: w) 2 degrees Celsius x) 5 degrees Celsius y) 10 degrees Celsius z) 20 degrees Celsius

Description : Ten calories of heat are added to 2 grams of water. The temperature of the water rises to a total of how many degrees? Is it: w) 2 degrees Celsius x) 5 degrees Celsius y) 10 degrees Celsius z) 20 degrees Celsius

Last Answer : ANSWER: X -- 5 DEGREES CELSIUS

If electrical conductivity increases with the increase of temperature of a substance, then it is a: (1) Conductor (2) Semiconductor (3) Insulator (4) Carborator

Description : If electrical conductivity increases with the increase of temperature of a substance, then it is a: (1) Conductor (2) Semiconductor (3) Insulator (4) Carborator

Last Answer : (2) Semiconductor Explanation: A solid substance that has conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects

If electrical conductivity increases with the increase of temperature of a substance, then it is a (1) Conductor (2) Semiconductor (3) Insulator (4) Carborator

Description : If electrical conductivity increases with the increase of temperature of a substance, then it is a (1) Conductor (2) Semiconductor (3) Insulator (4) Carborator

Last Answer : (2) Semiconductor Explanation: A solid substance that has conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects.

Resistance of a metal rod does not depend on which of the following ? 1) ... resistivity 2) density 3). Length 4), warmth ..... Explain it in a little details ?

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Last Answer : Answer : On its density. Because it depends on how close or how far the atom must be seen.

Kilowatt-hour (KWH) is the unit of - (1) power (2) resistance (3) resistivity (4) energy

Description : Kilowatt-hour (KWH) is the unit of - (1) power (2) resistance (3) resistivity (4) energy

Last Answer : (4) energy Explanation: The kilowatt hour (symbol kWh, kW h or kW h) is a unit of energy equal to 3.6 megajoules. If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in kilowatt hours is the power in kilowatts multiplied by the time in hours.

Find the time of relaxation between collsion and free path of electrons in copper at room temperature. Given resistivity of copper`=1.7xx10^(-8) Omega

Description : Find the time of relaxation between collsion and free path of electrons in copper at room temperature. Given resistivity of copper`=1.7xx10^(-8) Omega

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What is the effect of temperature on earth resistivity?

Description : What is the effect of temperature on earth resistivity?

Last Answer : The temperature co-efficient of resistivity for soil is negative, but it is negligible for temperature above freezing point. Below 0°C the water in the soil begins to freeze and introduces ... the temperature co-efficient, so that as the temperature becomes lower the resistivity rises enormously.  

Coke used for the production of calcium carbide should have (A) Low ash content (B) Low ignition temperature (C) High electrical resistivity (D) All (A), (B) and (C)

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When a sample of germanium and silicon having same impurity density are kept at room temperature then Resistivity of silicon will be higher than that of germanium, Why?

Description : When a sample of germanium and silicon having same impurity density are kept at room temperature then Resistivity of silicon will be higher than that of germanium, Why?

Last Answer : Ans-The answer is simple. Consider the PN diode for Ge 0.3eV is the breakdown voltage and in the case of Si its 0.7eV since the impurities are added in the same amount the bond due to the other atoms of the Si makes it resistive compared to the Ge.. thats all!

Resistivity of conductors is most affected by (A) composition. (B) temperature. (C) pressure. (D) current.

Description : Resistivity of conductors is most affected by (A) composition. (B) temperature. (C) pressure. (D) current.

Last Answer : (B) temperature.

On which of the following variables heat convected depends ? (a) Power density (b) Temperature difference between heated surface and coolant (c) Thermal resistivity, density, specific heat (d) Gravitational constant (e) All ofthe above

Description : On which of the following variables heat convected depends ? (a) Power density (b) Temperature difference between heated surface and coolant (c) Thermal resistivity, density, specific heat (d) Gravitational constant (e) All ofthe above

Last Answer : (e) All ofthe above

The resistivity of a metal is a function of temperature because

Last Answer : The resistivity of a metal is a function of temperature because the amplitude of vibration of the atoms varies with temperature.

Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Description : Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Last Answer : (4) Of the capillary action phenomenon Explanation: It is because of the capillary action phenomenon because of which oil rise up the wick in a lamp. Capillary action, or capillarity, is the ability ... such as paper, in some nonporous materials such as liquefied carbon fiber, or in a cell.

When a ship enters the sea from a river (1) It rises a little (2) It sinks a little (3) It remains at the same level (4) It rises or sinks depending on the material it is made of

Description : When a ship enters the sea from a river (1) It rises a little (2) It sinks a little (3) It remains at the same level (4) It rises or sinks depending on the material it is made of

Last Answer : (1) It rises a little Explanation: On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, or 599 mM). Seawater is denser than hot fresh water and pure water (density 1.0 g/ml) because the dissolved salts add mass without contributing significantly to the volume.

Ventilators are provided near the ceiling of the room because – (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part

Description : Ventilators are provided near the ceiling of the room because – (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part

Last Answer : (1) the exhaled warmer air rises up and goes out Explanation: Ventilation is a room air distribution strategy where conditioned outdoor air is supplied at floor level and extracted above the occupied zone, ... to heat exchange with heat sources in the space (e.g., occupants, computers, lights).

When a ship enters the sea from a river what will be the effect? (1) It lowers (2) It sways (3) It rises a little (4) It jolts

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The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Description : The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Last Answer : (1) capillary action Explanation: The oil in the wick of an oil lamp rises up due to capillary action.

The oil in the wick of lamp rises due to (1) Pressure difference (2) Pheonomenon of capillarity (3) Low viscosity of oil (4) Force of cohesion

Description : The oil in the wick of lamp rises due to (1) Pressure difference (2) Pheonomenon of capillarity (3) Low viscosity of oil (4) Force of cohesion

Last Answer : (2) Pheonomenon of capillarity Explanation: The oil in the wick of lamp rises due to phenomenon of capillarity. This phenomenon is called molecular property of matter.

An ice block with a piece of lead embedded in it floats in water. If ice melts the water level – (1) Rises (2) Falls (3) Remains same (4) Falls first and them rises

Description : An ice block with a piece of lead embedded in it floats in water. If ice melts the water level – (1) Rises (2) Falls (3) Remains same (4) Falls first and them rises

Last Answer : (2) Falls

If an ordinary glass tube and a glass capillary tube are 'both clipped in a beaker of water, water rises in – (1) both (2) only the glass tube (3) only the capillary tube (4) neither

Description : If an ordinary glass tube and a glass capillary tube are 'both clipped in a beaker of water, water rises in – (1) both (2) only the glass tube (3) only the capillary tube (4) neither

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A storm is predicted if atmospheric pressure – (1) Rises suddenly (2) Rises gradually (3) Falls suddenly (4) Falls gradually

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Last Answer : (3) Falls suddenly Explanation: Atmospheric pressure is basically the weight of air in the atmosphere above the reservoir, so the level of mercury continues to change until the weight of mercury in the ... reduces the weight of air above the reservoir so the mercury level drops to a lower level.

When ball having a projectile motion is rising up, it A. decelerates B. accelerates C. rises up with constant acceleration D. acceleration becomes zero

Description : When ball having a projectile motion is rising up, it A. decelerates B. accelerates C. rises up with constant acceleration D. acceleration becomes zero

Last Answer : decelerates

When a ship enters the sea from a river what will be the effect? (1) It lowers (2) It sways (3) It rises a little (4) It jolts

Description : When a ship enters the sea from a river what will be the effect? (1) It lowers (2) It sways (3) It rises a little (4) It jolts

Last Answer : It rises a little

The oil in the wick of lamp rises due to (1) Pressure difference (2) Pheonomenon of capillarity (3) Low viscosity of oil (4) Force of cohesion

Description : The oil in the wick of lamp rises due to (1) Pressure difference (2) Pheonomenon of capillarity (3) Low viscosity of oil (4) Force of cohesion

Last Answer : Pheonomenon of capillarity

The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Description : The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Last Answer : capillary action

If an ordinary glass tube and a glass capillary tube are both dipped in a beaker of water, water rises in (1) both (2) only the glass tube (3) only the capillary tube (4) neither

Description : If an ordinary glass tube and a glass capillary tube are both dipped in a beaker of water, water rises in (1) both (2) only the glass tube (3) only the capillary tube (4) neither

Last Answer : both

When a ship enters the sea from a river (1) it rises a little (2) it sinks a little (3) it remains at the same level (4) it rises or sinks depending on the material it is made of

Description : When a ship enters the sea from a river (1) it rises a little (2) it sinks a little (3) it remains at the same level (4) it rises or sinks depending on the material it is made of

Last Answer : it rises a little

Ventilators are provided near the ceiling of the room because (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part

Description : Ventilators are provided near the ceiling of the room because (1) the exhaled warmer air rises up and goes out (2) these provide cross ventilation in the room (3) these provide some sunlight in the room (4) these do not look nice in the lower part

Last Answer : the exhaled warmer air rises up and goes out

A storm is predicted if atmospheric pressure (1) rises suddenly (2) rises gradually (3) falls suddenly (4) falls gradually

Description : A storm is predicted if atmospheric pressure (1) rises suddenly (2) rises gradually (3) falls suddenly (4) falls gradually

Last Answer :  falls suddenly

Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Description : Oil rises up the wick in a lamp because (1) Oil is very light (2) Of the diffusion of oil through the wick (3) Of the surface tension phenomenon (4) Of the capillary action phenomenon

Last Answer : Of the capillary action phenomenon

An ice block with a piece of lead embeded in it floats in water. If ice melts the water level (1) Rises (2) Falls (3) Remains same (4) Falls first and then rises

Description : An ice block with a piece of lead embeded in it floats in water. If ice melts the water level (1) Rises (2) Falls (3) Remains same (4) Falls first and then rises

Last Answer : Falls

Addition of suitable impurities into semiconductor, is called – (1) Doping (2) Mixing (3) Forming (4) Diluting

Description : Addition of suitable impurities into semiconductor, is called – (1) Doping (2) Mixing (3) Forming (4) Diluting

Last Answer : (1) Doping Explanation: In semiconductor production, doping refers to the introduction of impurities into an extremely pure intrinsic semiconductor for the purpose of modulating its electrical properties. ... type of semiconductor and the properties that it needs to have for its intended purpose.

In a transistor, the base is _______. (1) an insulator (2) a conductor of low resistance (3) a conductor of high resistance (4) an extrinsic semiconductor

Description : In a transistor, the base is _______. (1) an insulator (2) a conductor of low resistance (3) a conductor of high resistance (4) an extrinsic semiconductor

Last Answer : (2) a conductor of low resistance Explanation: A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. It is composed of semiconductor material with at least three terminals for connection to an external circuit.

Ohm's law is valid in case of – (1) semiconductor (2) conductor (3) superconductor (4) insulator

Description : Ohm's law is valid in case of – (1) semiconductor (2) conductor (3) superconductor (4) insulator

Last Answer : (2) conductor Explanation: Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. It defines the relationship between the three fundamental, electrical quantities: current, voltage, and resistance.

A light dependent resistor is made up of A. low resistance semiconductor B. low resistance metaC. high resistance semiconductor D. high resistance metall

Description : A light dependent resistor is made up of A. low resistance semiconductor B. low resistance metal C. high resistance semiconductor D. high resistance metal

Last Answer :  high resistance semiconductor

Hall probe is made up of A. metals B. non metals C. semiconductor D. radioactive material

Description : Hall probe is made up of A. metals B. non metals C. semiconductor D. radioactive material

Last Answer : semiconductor

Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Description : Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons

Last Answer : ANSWER: Z -- PHOTONS

A semiconductor device made up of a single p-n Junction is called a: w) transistor x) diode y) Fet z) integrated circuit

Description : A semiconductor device made up of a single p-n Junction is called a: w) transistor x) diode y) Fet z) integrated circuit

Last Answer : ANSWER: X -- DIODE

A P-type semiconductor is doped to produce one of the following. Will it produce: w) both holes and electrons x) positive electrons y) negative electrons z) holes

Description : A P-type semiconductor is doped to produce one of the following. Will it produce: w) both holes and electrons x) positive electrons y) negative electrons z) holes

Last Answer : ANSWER: Z -- HOLES

Addition of suitable impurities into semiconductor, is called (1) Doping (2) Mixing (3) Forming (4) Diluting

Description : Addition of suitable impurities into semiconductor, is called (1) Doping (2) Mixing (3) Forming (4) Diluting

Last Answer : Doping

Ohm’s law is valid in case of (1) semiconductor (2) conductor (3) superconductor (4) insulator

Description : Ohm’s law is valid in case of (1) semiconductor (2) conductor (3) superconductor (4) insulator

Last Answer : conductor

How much heat is absorbed by a 59g iron skillet when its temperature rises from 10oC to 25oC?

Description : How much heat is absorbed by a 59g iron skillet when its temperature rises from 10oC to 25oC?

Last Answer : 410 JFirst you need to find the specific heat capacity (c) for iron, which is 0.461 J/g-oC (https://www.engineersedge.com/materials/specific_heat_capacity_of_metals_13259.htm).The equation to use is Q=m x c x delta t, ... Q = 59 g x 0.461 J/g-oC x 15 oC = 410 J (rounded to two significant figures)

As the temperature of ice rises, the ice melts and its density _____. A. Decreases B. Remains constant C. Increases D. Increases upto 10 °C

Description : As the temperature of ice rises, the ice melts and its density _____. A. Decreases B. Remains constant C. Increases D. Increases upto 10 °C

Last Answer : ANSWER: C