The current of an electron beam has a measured current of I = 50.00 μA with a radius of 1.00 mm2 . What is the magnitude of the current density of the beam?

Q: Consider a wire of a circular cross-section with a radius of R = 3.00 mm . The magnitude of the…

A: To find the current through the inner section of the wire from the center. Given:

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: current of I = 4.6 A is passing through a conductor with cross sectional area A = 3.5 × 10-4 m2. The…

A: Given  Current I = 4.6 A  Crosssectional area A =3.5 × 10-4 m2  Number density n =1.2 × 1027  m-3

Q: A copper wire of 20 m long has a potential difference of 68 V between its ends. What is the current…

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Q: We have a copper wire taking a 1.67 A current to a cellphone and the wire has a diameter of 1.02 mm.…

A: Given data Current through the wire ,I=1.67 A Diameter of the wire, d=1.02 mm=1.02×10-3 m

Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.05 cm2 varies…

A: Area of the surface is A = 2.05 cm2 The equation of charge is q = 8t3-5t+6 Time of flow is t = 0.900…

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

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Q: The quantity of charge q (in coulombs) that has passed through a surface of area 1.90 cm² varies…

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Q: he quantity of charge q (in coulombs) that has passed through a surface of area 1.95 cm2 varies with…

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Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2 cm² varies with…

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

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Q: Given that a current of I(t)= 13t2+4 (wheret is in s) is flowing parallel to the axis of a…

A: Data Given ,  I(t) = 13t2 + 4 ( where , t is in s ) Radius of the cylinder ( r ) = 0.4 mm…

Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.10 cm2 varies…

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Q: What is the current in a wire of radius R = 2.08 mm if the magnitude of the current density is given…

A: Write a given values of this question.

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

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Q: Figure P26.6 represents a section of a conductor of nonuniform diameter carrying a current of I=5.00…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps. (a) What is the…

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Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.00 cm? varies…

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Q: A copper wire has a diameter of 2.022 mm. What magnitude current flows when the drift velocity is…

A: Given that---- Diameter = 2.022mm Drift velocity = 1.44 m/s Density of copper = 8.92*103 kg/m3…

Q: A general relationship for the current density carried by electrons of density /I is J = qnv. where…

A: a) We know that current density(J) of electron is denoted as mentioned below. Where, q denotes…

Q: A wire has a current density of 7.47 × 106 A/m². If the cross-sectional area of the wire is 2.39…

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Q: Q2Silver wire with cross section area 0.923mm2 , the resistivity 10.49g/cm³ and the molar mass…

A: Given data: Cross-section area of silver wire is, A=0.923 mm2=0.923×10-6 m2. Resistivity of wire is,…

Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.05 cm2 varies…

A: a) The instantaneous current (I) through the surface is the rate of change of charge (q) with time…

Q: A copper wire of 3mm diameter with conductivity of 6.7 * 10' (Q.m) , and electron mobility of 0.0064…

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Q: The electric field of the material between two coaxial cables of radius 0.525 cm and 0.675 cm is…

A: The current density of the material is, J=σE Here, σ is the conductivity of the material and E is…

Q: The current density in the wires of an electrical machine is not to exceed 4,500 amperes per square…

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Q: The mean time between collisions in iron is 3.6×10−15 s. What electron current is driven through a…

A: Let t be the mean time of collision in iron, d be the diameter of the wire, E be the electric field,…

Q: What is the current in a wire of radius R = 4.48 mm if the magnitude of the current density is given…

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Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.00 cm? varies…

A: (a) Instantaneous current through the surface

Q: A current of I = 3.6 A is passing through a conductor with cross sectional area A = 6.5 × 10-4 m2.…

A: Drift velocity is given by,                   vd = IneAHere,           I is the current flown…

Q: What is the current through a cylindrical wire of radius R = 0.1 mm if the current density is J = J0…

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Q: A beam contains 7.8 x 106 doubly charged positive ions per cubic centimeter, all of which are moving…

A: Given-: Velocity of charge (Vd)=7.3*10^5 m/s We know that magnitude of current density by the…

Q: An electron beam has a measured current of I = 54.30 µA with a radius of 2.00 mm. What is the…

A: The expression for current density is given by J = IA ..............................(1)whereJ =…

Q: The potential difference between points in a wire 75.0 cm apart is 0.938 V when the current density…

A: a)  d= 7cm =0.75m, V=0.938V,                         J =4.4×107A/m2           E =Vd…

Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.00 cm2 varies…

A:

Q: What is the current in a wire of radius R = 2.08 mm if the magnitude of the current density is given…

A: The current density relation is given as

Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.05 cm2 varies…

A:

Q: Given that a current of I(t)= 5t2+4 (where t is in s) is flowing parallel to the axis of a…

A: Given : Current=I(t)=5t2+4 t=5.9s Radius=r=0.2 mm=0.2x10-3 m Length=l=50 cm=0.5 m We have to find…

Q: A beam contains 2.0 × 109 doubly charged positive ions per cubic centimeter, all of which are moving…

A:

Q: The beam, consisting of electrons with constant kinetic energy and uniform density, carries a…

A: Option D

Q: The quantity of charge q (in coulombs) that has passed through a surface of area 2.10 cm² varies…

A: Write the given values with the suitable variables. A=2.10 cm2=2.10×10-4 m2q=4t3+5t+6t=0.9 s Here,…

Q: Consider a wire of a circular cross-section with a radius of R = 3.07 mm. The magnitude of the…

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Q: copper wire has a square cross section 2.9 mm on a side. he wire is 4.1 m long and carries a current…

A: We know that current density is given by  J=I/A

Q: The vector current density of a 3m long and 3mm diameter conductor is given as 155630 A/m^2.…

A: Write the formula for the current density.

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.