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AR01075
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I am trying to determine the size of a conductive 2-D sheet that has a specified degree of increased resistance (or reduced conductivity) compared to an infinite sheet.
Imagine that electrons enter the infinite sheet and exit the sheet at 2 points which are 1 unit of distance apart and aligned on the X axis. The sheet has a certain conductivity, for simplicity let's say it is 1.
There is a certain finite resistance that could be measured between the points (I don't think it would be zero!). What is the size and shape of an area that encloses 90% or 99% of the total current (again, for simplicity, let's say the voltage is 1)?
I have thought long and hard about the SHAPE of the "isocurrent" lines: Circular arcs? Canenarys? Parabolas? Elliptical arcs? And I have no idea what the answer is. Should the curve have a minimum length for a given enclosed area? Should any derivatives have a zero value or no discontinuities?
I had thought that if I could get a function for the shape of the isocurrent lines, then I could have a function for the length of the isocurrent line between the endpoints. Current is inversely proportional to the length of the isocurrent line, and I would hopefully be able to integrate the current as the center of the isocurrent line sweeps from a Y value of zero to infinity.
But I have come to a complete block. I thought that the isocurrent curves may be catenary lines, but the integral does not appear to converge on a finite value.
I am looking for guidance or a source for the answer.
-Tony
Imagine that electrons enter the infinite sheet and exit the sheet at 2 points which are 1 unit of distance apart and aligned on the X axis. The sheet has a certain conductivity, for simplicity let's say it is 1.
There is a certain finite resistance that could be measured between the points (I don't think it would be zero!). What is the size and shape of an area that encloses 90% or 99% of the total current (again, for simplicity, let's say the voltage is 1)?
I have thought long and hard about the SHAPE of the "isocurrent" lines: Circular arcs? Canenarys? Parabolas? Elliptical arcs? And I have no idea what the answer is. Should the curve have a minimum length for a given enclosed area? Should any derivatives have a zero value or no discontinuities?
I had thought that if I could get a function for the shape of the isocurrent lines, then I could have a function for the length of the isocurrent line between the endpoints. Current is inversely proportional to the length of the isocurrent line, and I would hopefully be able to integrate the current as the center of the isocurrent line sweeps from a Y value of zero to infinity.
But I have come to a complete block. I thought that the isocurrent curves may be catenary lines, but the integral does not appear to converge on a finite value.
I am looking for guidance or a source for the answer.
-Tony