Do holes move in semiconductor?

Do holes move in semiconductor?

Never,holes is just our assumption we say the vacancy of electrons is hole.hole are always remain just electrons move through it.means vacancy change in continuous manner.it look like hole are moving.

Related questions

Description : Conduction band electrons have more mobility than holes because they (1) are lighter (2) experience collision less frequently (3) have negative charge (4) need less energy to move them

Answer :  experience collision less frequently

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

Description : In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch? (1) To prevent the steam pressure from bursting open the pouch (2) To allow the heat to get into the food through the hole (3) To allow the microwaves to get into the food through the holes (4) To allow the aroma of the food to come out through the holes

Answer : To prevent the steam pressure from bursting open the pouch

Description : As a longitudinal wave moves through a medium, the particles of the medium: w) vibrate in a path parallel to the path of the wave x) vibrate in a path perpendicular to the path of the wave y) follow the wave along its entire path z) do not move

Answer : ANSWER: W -- VIBRATE IN A PATH PARALLEL TO THE PATH OF THE WAVE

Description : Do the rings move?

Answer : Yes, but not like a solid would move. The bits and boulders of Saturn's rings each orbit like tiny moons. They move around Saturn in the same direction as Saturn rotates and the same direction as ... a much longer time (millions of years), some of the rings may spread out and eventually disappear.

Description : If you’re walking somewhere and see a log or a big branch on the road, are you likely to go out of your way to move it to the side so that the cars could pass unobstructed? Would you be more likely to do it if there was no one around to see you do it, or less likely?

Description : The females of some moth species lack wings, all they can do to move is crawl.

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Answer : In a P type semiconductor At room temperature the hole concentration equals the acceptor concentration

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Answer : Avalanche break down in a semiconductor diode occurs when Reverse bias exceeds a certain value

Description : Some highly refined semiconductor materials is  with indium, what will be the majority carrires

Description : n-type semiconductor can be made by adding ____ to intrinsic semiconductor (A) Boron (B) Arsenic (C) Carbon (D) Germanium

Answer : n-type semiconductor can be made by adding Arsenic to intrinsic semiconductor

Description : A snubber circuit is connected to the power semiconductor device to reduce the (A) turn-on time (B) turn-off time (C) electrical stresses (D) thermal resistance

Answer : A snubber circuit is connected to the power semiconductor device to reduce the electrical stresses

Description : The Semiconductor strain gauges typically have much higher gauge factors than those of metallic strain gauges, primarily due to : (A) higher temperature sensitivity (B) higher Poisson’s ratio (C) higher piezoresitive coefficient (D) higher magnetostrictive coefficient

Answer : The Semiconductor strain gauges typically have much higher gauge factors than those of metallic strain gauges, primarily due to : higher piezoresitive coefficient

Description : When the temperature of a doped semiconductor is increased, its conductivity  (1) Decreases (2) Increases (3) Does not change (4) Increases or decreases depending on whether it is p-type or n-type

Answer : When the temperature of a doped semiconductor is increased, its conductivity Increases.

Description : Which of the following semiconductor materials is (are) used for manufacturing solar cells?  (1) Gallium arsenide (2) Indium arsenide (3) Cadmium sulfide (4) All of these

Answer : All of these.

Description : For Gunn diodes, semiconductor material preferred is  (a) Silicon (b) Germanium (c) Gallium Arsenide (d) all of these

Description : When Aluminium is deposited directly upon N type semiconductor, the diode formed has the characteristic  A) Forward current due to minority carriers B) Small delay time from on to off C) Large storage time D) Higher break down voltage

Description : Semiconductor A has a higher band gap than semiconductor B. If both A and B have the same dimensions, the same number of electrons at a given temperature and the same electron and hole mobilities, then

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Answer : Categories of semiconductor components (Integrated circuit families) Integrated circuits are made from semiconductor material These are divided into three main categories A) ... minus, true or false etc. common families include Transistor Transistor Logic (TTL), CMOS, MOSFET.

Description : Justify the remedial measures for following defects : (i) Formation of pot holes in case of WBM roads. (ii) Formation of ruts in case of earthen roads. (iii)Bitumen bleeding in case of bituminous roads.

Answer : The cross section of hill road is shown below: (i) Formation of pot holes in case of WBM roads : The pot holes should be patched up by. (1) Cutting the defective area to rectangular shape and ... spreading a layer of dry coarse sand in a thickness varying 5 mm to 10 mm and rolling the surface.

Description : Identify the causes of generating blow holes and misrun in casting and also suggest remedies to avoid them.

Answer : Answer: 1) Blowholes: Causess: Excessive moisture in the sand, or when permeability of sand is low, sand grains are too fine, sand is rammed too hard, or when venting is insufficient. ... gating Remedies : Adjust proper pouring temperature Modify design Modify gating system.

Description : The dominant charge carriers in p-type semiconductors are: w) neutrons x) electrons y) protons z) holes

Description : Enrichment of uranium by gaseous diffusion relies on the fact that uranium-235 diffuses through holes in the barriers more readily than uranium-238 does because uranium-235 is: w) a different chemical compound. x) a different wavelength. y) resistant to magnetism. z) slightly lighter than uranium-238.

Answer : ANSWER: Z -- SLIGHTLY LIGHTER THAN URANIUM-238.

Description : In N-type semiconductors the majority of the carriers are: w) holes x) electrons y) protons z) neutrons

Description : In the early 17th century, based on his observations with a telescope, Galileo Galilei attacked a belief espoused by the church. That belief was: w) that the earth was flat. x) the sky was a large dome with holes through which heaven could be seen. y) that the earth was at the center of the universe. z) there are no other planets.

Answer : ANSWER: Y -- THAT THE EARTH WAS AT THE CENTER OF THE UNIVERSE.

Description : Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters

Answer : mud is a bad conductor

Description : Electric current in a metal wire is due to the flow of— (1) Electrons (2) Protons (3) Ions (4) Holes

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The figure shows the front view of a convex lens, which originally had only one edge. Five holes of different shapes, namely triangle, square, pentagon, hexagon and circle, were drilled through it at points P, Q, R, S and T in such a way that the holes were parallel to each other, perpendicular to the edge and all the holes were still within the lens edge. What is the total number of edges in the lens after the holes were drilled?

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Shown in the figure are pages in a children’s book with holes in it. The book is cut along the red line. Which option shows the correct cross section?

Description : Sketch the method to reduced stress concentration in cylindrical members with holes.

Answer : The methods of reducing stress concentration in cylindrical members with shoulders hole, subjected to tensile load.

Description : In a network, if the number of holes is n and number of elements is e, then the number of independent mesh equations required to solve the network is (a) e – n + 1 (b) e + n + 1 (c) e + n – 1 (d) e – n – 1

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Answer : Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to eliminate creeping at no load

Description : Consider the following statements regarding the formation of P-N junctions: 1. Holes diffuse across the junction from P-side to N—side 2. The depletion layer is wiped out. 3. There is continuous flow of current across the junction 4. A barrier potential is set up across the junction Which of the above statements are correct? (a) 1 and 3 (b) 2 and 3 (c) 1 and 4 (d) 2 and 4

Answer : Ans: (c) When a pn-junction is formed, there will be diffusion of carries across the junctions followed by recombination, and the creation of a depletion layer across which a ... potential is established, which will prevent further diffusion of carries across the junction, leading to equilibrium

Description : The pollutant responsible for ozone holes is _____. (1) CO2 (2) SO2 (3) CO (4) CFC

Description : One of the following is not the result of underground water action (1) Stalactites (2) Stalagmites (3) Sink holes (4) Fiords

Description : The region consisting of holes and electrons near the p-n junction of a diode is (A) diffusion region (B) neutral zone (C) recombination region (D) depletion region

Answer : The  region  consisting  of  holes  and  electrons  in a  pn  junction  is called  depletion layer.The  reason  being  both  holes  and  electrons have neutrolyzed at the  junction  thus  it  is depleated  with  delocalized  charge  carriers.

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Answer : The random motion of holes and free electrons due to thermal agitation is called Diffusion.

Description : We see the annual change of the sky, because A. Earth rotate about its axis B. the celestial sphere rotates around Earth once a year C. Earth revolves around the sun D. satrs move in the sky E. none of the above, there is no annual change of the sky

Answer : C. Earth revolves around the sun

Description : Each day, from a point on the earth north of the equator, most stars appear to A. remain stationary overhead. D. move to the north. B. rise in the east and set in the west. E. move to the south. C. rise in the west and set in the east.

Answer : B. rise in the east and set in the west.

Description : Write the code of signals used in ranging with respect to : i) Correct position ii) Fix the ranging rod iii) Vertical position of ranging rod iv) Move slowly to left of observer

Answer : i) Correct position : Both hands above Head and then Brought Down ii) Fix the ranging rod : Both Arms extended forward horizontally and the hands depressed briskly iii) Vertical position of ranging rod : 1 ... and moved to the Left iv) Move slowly to left of observer : Slow sweeps with Left Hand

Description : A positive sloped supply curve for a product represents (a) Supply will move with movement in the price in the opposite direction; (b) Supply will move with the movement in the price in the same direction; (c) Both ; (d) None

Answer : (b) Supply will move with the movement in the price in the same direction;

Description : If the price elasticity of a product is greater than 1, we can say that (a) The products demand is sensitive to price variation; (b) Product demand is insensitive to price variation; (c) Demand and price move in same directions ; (d) None of this

Answer : (a) The products demand is sensitive to price variation;

Description : An electron is moved through a potential difference of 1 volt. How much energy in joules was used to move the electron?

Answer : ANSWER: 1.6 x 10-19 JOULES

Description : For a point charge to feel a net force in a homogeneous magnetic field, which one of the following statements is true? The charge must: w) move parallel to the magnetic lines of flux x) have a component of its motion perpendicular to the lines of flux y) be stationary z) be a positive charge

Answer : ANSWER: X -- HAVE A COMPONENT OF ITS MOTION PERPENDICULAR TO THE LINES OF FLUX

Description : Standing waves are formed when two sets of waves of equal amplitude and frequency w) are in phase x) are in opposite phase y) move through each other in opposite directions z) are reflected from the same surface

Answer : ANSWER: Y -- MOVE THROUGH EACH OTHER IN OPPOSITE DIRECTIONS

Description : Two hockey pucks, of unequal mass and connected by a spring of negligible mass, rest on a horizontal frictionless surface. The spring is released, and the pucks move apart. The center of mass of the two pucks does one of the following. Does it: w) move in a circle x) move in the direction of the greater mass y) remain stationary z) move in the direction of the smaller mass

Answer : ANSWER: Y -- REMAIN STATIONARY

Description : A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is: w) zero x) parallel to the direction of the satellite's instantaneous velocity y) perpendicular to the direction of the satellite's instantaneous velocity z) none of the above

Answer : ANSWER: Y -- PERPENDICULAR TO THE INSTANTANEOUS DIRECTION OF THE SATTELITE’S VELOCITY

Description : In general, as you move across a period (left to right) electronegativity: w) increases x) decreases y) remains the same z) increases or decreases