WebNov 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. 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.
Current density - Wikipedia
WebExplanation: To calculate the total current I, we integrate J over the cross-sectional area of the wire: I = ∫ J ( r) d A where dA is an element of cross-sectional area at distance r from … Web"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 eclipse コメントアウト ショートカット 効かない
The current density in a wire of radius ‘a’ varies with radial …
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 … WebThe formula for Current Density is given as, J = I / A. Where, I = current flowing through the conductor in Amperes. A = cross-sectional area in m 2. Current density is expressed in … WebA wire is made of copper and has a radius 0.815 mm. Calculate the drift velocity assuming 1 free electron per atom for I = 1A. nqv A dt dQ I = = d nqA I vd = 28 3 3 23 8.47 10 / ... The current density at a point in a material depends on the material and on E. For some materials, J is proportional to E at a given temperature. eclipse コンソール more