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Transcribed image text: The magnitude J (r) of the current density in a certain cylindrical wire is given as a function of radial distance from the center of the wire's cross section as J (r) = Br, where r is in meters, J is in amperes per square meter, and B = 2.19 Times 10^5 A/m^3. This function applies out to the wire's radius of 2.00 mm.
When the current density in a wire is uniform, which gives the amount of current through a cross section of the wire? the ratio of the current density to the cross - sectional area. the ratio of the cross - sectional area to the current density. the product of the cross - sectional area and the current density. Here’s the best way to solve it.
A) What is the instantaneous current through the surface at t = 0.950 s? B)What is the value of the current density? The quantity of charge q (in coulombs) that has passed through a surface of area 2.05 cm 2 varies with time according to the equation q = 4 t 3 + 3 t + 6, where t is in seconds.
2.27. Find the value of r2. (Round your answer to three decimal places.) r2 =. The accompanying data on x = current density (mA/cm 2) and y = rate of deposition (µm/min) appeared in an article. Do you agree with the claim by the article's author that "a linear relationship was obtained from the tin-lead rate of deposition as a function of ...
Step 1. The wire is infinitely long, straight, and cylindrical. An infinitely long, straight, cylindrical wire of radius R has a uniform current density J = J z^ in cylindrical coordinates. What is the magnitude of the magnetic field at some point inside the wire at a distance ri <R from the wire's central axis?
A long, straight, solid cylinder, oriented with its axis in the z -direction, carries a current whose current density is J. The current density, although symmetrical about the cylinder axis, is not constant but varies according to the relationship J = πa22I0 [1−(ar)2]k^ for r≤ a =0 for r≥a where a is the radius of the cylinder, r is the ...
the magnitude J of the current density in a certain wire with a circular cross section of radius R = Your solution’s ready to go! Enhanced with AI, our expert help has broken down your problem into an easy-to-learn solution you can count on.
The accompanying data on x = current density (mA/cm2) and y = rate of deposition (um/min) appeared in an article. Do you agree with the claim by the article's author that "a linear relationship was obtained from the tin-lead rate of deposition as a function of current density"? x 20 40 60 80 0.09 1.25 1.61 2.22 Find the value of r2.
What is the current density J in the current loop? The earth's magnetic field, with a magnetic dipole moment of 8.0×1022 A m2, is generated by currents within the molten iron of the earth's outer core. Suppose we model the core current as a 3000-km-diameter current loop made from a 1000-km-diameter "wire." The loop diameter is measured from ...
The current density inside a long, solid, cylindrical wire of radius a = 2.5 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 = 250 A/m2. Find the magnitude of the magnetic field at a distance (a) r=0, (b) r = 1.6 mm and (c) r=2.5 mm from the center.