What is the electron drift speed in the 2.0-mm-diameter segment of the wire

Q: A potential difference V is applied to a wire of cross-sectional area A, length L, and resistivity…

A: a)   The power expression is,

Q: 6. The current-density magnitude in a certain circular wire is J = (2.90 × 1010 A/m4) r, where r is…

A: First we need to find amount of current flowing through the wire, So given by: J = 2.90*10^10*r^2 We…

Q: 1. A hollow cylinder of length L, inner radius R1 , and radius R3 is filled with two different…

A: (a)Formula for the resistance is:

Q: An unknown wire in a circuit has a circular cross-section with diameter 3.8 mm. It carries a current…

A: 1. The density of the charge carriers in a conductor or material is given by n = I /(A*vd*q) Here,…

Q: When a current flows in an aluminum wire of diameter 4.45 mm, the drift speed of the conduction…

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Q: A current of 1 = 7.62 A is passing through a conductor with cross sectional area A = 7.11 x 104 m².…

A: The current passing through the conductor, The cross-sectional area of the conductor, The number…

Q: s part of a lecture demonstration, a physics professor plans to hold an uninsulated current-carrying…

A:

Q: length of copper wire has a uniform cross-sectional area of 1.0 mm2. Assume that the drift velocity…

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Q: Three cylindrical wires are made of the same material. Their lengths and radii are wire 1: length ℓ,…

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Q: A long wire with a radius of 0.400 cm carries a current. The porential difference across a 3.60 m…

A: Given data:  Radius (r) = 0.400 cm = 0.400×10-2 m Length (L) = 3.60 m Potential difference (V) =…

Q: Consider a copper wire with a diameter of 2.45 mm. (a) What is the drift speed of the electrons in…

A: Given that: Diameter of copper wire = 2.45 mm, density of copper = 8.92 g/cm3 Molar mass of copper =…

Q: The vector current density of a 3-meter-long and 3mm diameter conductor is given as 155630 A/m2.…

A:

Q: Problem 2: A current of I= 3.4 A is passing through a conductor with cross sectional area A = 1.5 x…

A: Given Current is I =3.4 A Cross sectional area is A=1.50×10-4 m2 Number density is n=1.7×1027  /m3…

Q: The figure below represents a section of a circular conductor of nonuniform diameter carrying a…

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Q: An isolated conducting sphere has a 11 cm radius. One wire carries a current of 1.0000023 A into it…

A: It is given that,

Q: A 200km long high voltage transmission line runs across the Arizona open desert. The copper wire…

A: Given,Length of the high tension wire, L =200 kmdiameter of the copper wire, d = 2.00 cmcurrent, I =…

Q: The following graph represents the charge-discharge profile of a Li-ion battery in the 1st and 50th…

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Q: onducting sphere is charged by an emf source E through a 1.00 M stor. When the sphere is fully…

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Q: What is the current I through the resistor at t= 50 micro seconds, and immediately after the switch…

A: Write the given values with the suitable variables. t1=50 μs=50×10-6 st2=200 μs=200×10-6 sC=4…

Q: A long wire with a radius of 0.450 cm carries a current. The potential difference across a 3.20 m…

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Q: In a large flashlight, the distance from the on-off switch and the light bulb is 9.9 cm. (a)…

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Q: Consider a copper wire with a diameter of 2.75 mm. A. What is the drift speed of the electrons in…

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Q: Two identical pucks, A and B, slide over a level ice floor without friction. Initially, puck B is…

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Q: When a current flows in an aluminum wire of diameter 2.83 mm, the drift speed of the conduction…

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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.