A certain cylindrical wire carries current. We draw a circle of radius r around its central axis in Figure (a) to determine the current i within the circle. Figure (b) shows current i as a function of r2. The vertical scale is set by i, = 4.7 mA, and the horizontal scale is set by r2 = 4.3 mm². (a) Is the current density uniform? (b) If so, what is its magnitude? (a) (b) Number I Units i (mA) (a) Z ² (mm²) (b)
A certain cylindrical wire carries current. We draw a circle of radius r around its central axis in Figure (a) to determine the current i within the circle. Figure (b) shows current i as a function of r2. The vertical scale is set by i, = 4.7 mA, and the horizontal scale is set by r2 = 4.3 mm². (a) Is the current density uniform? (b) If so, what is its magnitude? (a) (b) Number I Units i (mA) (a) Z ² (mm²) (b)
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A certain cylindrical wire carries current. We draw a circle of radius r around its central axis in Figure (a) to determine the current i
within the circle. Figure (b) shows current i as a function of r2. The vertical scale is set by is = 4.7 mA, and the horizontal scale is set by
r² = 4.3 mm². (a) Is the current density uniform? (b) If so, what is its magnitude?
(a)
(b) Number i
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