what is the difference between diffusion and drift current?
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The flow of current in a semiconductor are of two types namely, drift and diffusion current. The current produced due to the movement of charge carriers by external applied voltage is known as drift current. Whereas, the current produced due to the change in concentrations is called diffusion current.
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Diffusion current is a current in a semiconductor caused by the diffusion of charge carriers (holes and/or electrons). ... The drift current, by contrast, is due to the motion of charge carriers due to the force exerted on them by an electric field.
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Both use ion channels to move ions across the cell membrane, in or out of the cell. Differences: Passive Transport (or Diffusion) moves ions from high concentration to low, using no metabolic energy. Active Transport moves ions from low concentration to high, using metabolic energy in the form of ATP.
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Diffusion is the movement of one specific molecule from a high concentration area to a low concentration one. Filtration is the movement of a fluid (mixture of several molecules) from a region of high pressure to a region of a low pressure.
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Diffusion is the movement of particles from a high to lower concentration. Osmosis is the diffusion of water across a membrane. Active transport moves particles from low to higher concentration.
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Mass transfer is the transport of mass from one place to another. ... The main difference between mass transfer and diffusion is that mass transfer may or may not involve a concentration gradient whereas diffusion does involve the movement of a solute down a concentration gradient.
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The main difference between the two is that diffusion can occur in any mixture, even when two solutions aren't separated by a semipermeable membrane, whereas osmosis exclusively occurs across a semipermeable membrane.
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Advection and Diffusion. Transport processes in the environment may be divided into two categories: advection and diffusion. Advection refers to transport with the mean fluid flow. ... In contrast, diffusion refers to the transport of compounds through the action of random motions.
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Current is the flow of free charges, such as electrons and ions. Drift velocity vd is the average speed at which these charges move. Current I is proportional to drift velocity vd, as expressed in the relationship I=nqAvd I = nqAv d . Here, I is the current through a wire of cross-sectional area A.
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Both involve ion movement. Both use ion channels to move ions across the cell membrane, in or out of the cell. ... Passive Transport (or Diffusion) moves ions from high concentration to low, using no metabolic energy. Active Transport moves ions from low concentration to high, using metabolic energy in the form of ATP.
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In terms of rates and speeds, effusion and diffusion are quite similar. The difference between the two is that diffusion is the spreading out of a substance within a dispersing medium, and effusion is when a substance escapes through a tiny pinhole, or other hole.
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Ocean currents are divided on the basis of temperature into currents,drifts and streams. The forward movement of surface water of theoceans under the influence of prevailing winds is called drift whereas the ocean current involves the movement of oceanic water in a definite direction with greater velocity.
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Answer Expert Verified Correct answer: Diffusion is the movement of particles from a high to low concentration, while osmosis is the movement of water from a high particle concentration to a low particle concentration.
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Answer and Explanation: Brownian motion is the movement of the particle not in a fixed direction while in diffusion the particle moves in the direction of high concentration to low concentration.
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In simple diffusion, the molecules can pass only in the direction of concentration gradient. In facilitated diffusion, the molecules can pass both in direction and opposite of the concentration gradient.
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Conduction current is the actual current whereas displacement current is the apparent current produced by time varying electric field.
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is that diffusion is (physics) the intermingling of the molecules of a fluid due to random thermal agitation while diffusivity is (physics) a coefficient of diffusion; especially the amount of heat that passes through a given area in unit time.