The current density in a wire of radius a
WebThe current density in a cylindrical wire of radius R = 3.0 mm is uniform across a cross section of the wire and is J = 1.51 0 5 A / m 2 (a) What is the current through the outer portion of the wire between radial distances R /3 and R and what will be the current through the center point to R /2. http://www.phys.lsu.edu/classes/fall2014/phys2113sec3/lecture18.pdf
The current density in a wire of radius a
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WebJul 14, 2024 · The current density in a cylindrical wire of radius r = 4.0 mm is 1.0 × 106 A/m2 . The current through the outer portion of the wire between radial distances r/2 and r is xπ … WebNov 5, 2024 · A long solid uniform cable of radius, \(R\), carries current, \(I\), with a current density that is uniform through the cross-section of the cable. Determine the strength of the magnetic field as a function of, \(r\), the distance from the center of the cable, inside and …
Web—11 What is the current in a wire of radius R = 3.40 mm if the magnitude of the current density is given by (a) = Jor/R and (b) = Jo(l — HR), in which r is the radial distance and = … WebDear friend pay attention to ampere's law which has in it the term I(enclosed) in it.So when you find field inside the wire current enclosed within a circle of radius r is something that you will obtain by integrating the current density and is not what you wrote.
WebCurrent density refers to the density of current flow in some conductor. It is denoted by the symbol J. In the field of electromagnetism, Current Density and its measurement is very … WebTranscribed Image Text: 2. An infinitely long wire situated along the y-axis carries a current I. A circular wire of radius a, carrying a current I', is placed on top of the straight wire, centered on it as shown in the figure. Calculate the force (magnitude and direction) on the loop wire due to the magnetic field of the straight wire.
WebIf the current density in a wire or radius R is given by J= kr, 0 < r < R, what is the current in the wire? (A) 2nkR3/3 ( (E) kR2/2 (B) 3mkR3/2 (C)kR3/3 (D) kR2 This problem has been solved!
WebFirst, we calculate the current density: J = I A = 10 × 10−3A 3.31 × 10−6m2 = 3.02 × 103 A m2. The resistance of the wire is R = ρL A = (1.68 × 10−8Ω · m) 5.00m 3.31 × 10−6m2 = 0.025Ω. Finally, we can find the electrical field: E = ρJ = 1.68 × 10−8Ω · m(3.02 × 103 A m2) = 5.07 × 10−5V m. Significance la toxica mariah lyricsWebThe current density is a solid cylindrical wire a radius R, as a function of radial distance Doubtnut 2.48M subscribers Subscribe 1.8K views 2 years ago The current density is a … latoya butheleziWebThe current density inside a long, solid, cylindrical wire of radius a 3.1 mm is in the direction of the central axis, and its magnitude varies linearly with radial distance r from the axis according to J = J0r/a, where J0 = 310 A/m2. Find the magnitude of the magnetic field at (a) r = 0, (b) r = a/2, and (c) r = a. Question latoyaewers yahoo.comWeb"2 An isolated conducting sphere has a 10 cm radius. One wire carries a current of 1.000 002 0 A into it. Another wire carries a current of 1.000 000 0 A out of it. How long would it take for the ... 74 The current density in a wire is uniform and has magni- tude 2.0 X 106 A/m2, the wire's length is 5.0 m, and the density of latoya bush harris houseWebNov 5, 2024 · Inside of the cable, the circulation integral around a circular path of radius, r < R, is the same: ∮→B ⋅ d→l = B2πr However, in this case, the smaller Amperian loop does not enclose all of the current flowing through the cable. We are told that the current density, j, is uniform in the cable. latoya burwell attorneyWebThe current density j inside a long, solid cylindrical wire of radius a=12mm is in the direction of the central axis and its magnitude varies linearly with radial distance r from the axis according to J= aJ 0r where J 0= 4π10 5 m 2A. The magnitude of magnetic field at r= 2a in μT is: Hard View solution > latoya cantrell father in lawWebScience Physics Question A long, straight wire with a circular cross section of radius R carries a current I. Assume that the current density is not constant across the cross section of the wire, but rather varies as J=\alpha r J = αr, where \alpha α is a constant. latoya brothers