Current path length

Equation can also be interpreted as follows the relative increase of resistance due to the defect is equal to the relative increase of the length of the eddy currents path. 

So suppose we try to parallel three similar capacitors, as shown on the left side of Figure 5-2. By following the current paths, we realize that the outer capacitors are going to be less and less effective in terms of sharing current. Therefore, we need to provide a little ballasting. A horizontal cut is made in the lower island as shown in the schematic on the right side. This ensures that the total PCB length, as seen by the currents, is identical for all... 

Diffusion is characterized by a mass transfer coefficient U8 of 104 m/h, which can be regarded as a molecular diffusivity of 2 x 10 6 m2/h divided by a path length of 0.02 m. In practice, bioturbation may contribute substantially to this exchange process, and in shallow water current-induced turbulence may also increase the rate of transport. Diffusion in association with organic colloids is not included. The D value is thus given as Us AwZ2. 

A more recent development in high power density large-scale tubular SOFCs is that of flat tubes, which consist of a tube with two flat, parallel sides, and two rounded sides, with cross-connected current paths connecting the two flat faces of the tubes through the interior to minimize the length of the current path, as shown schematically in Figure 6.6 [48],... 

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