00:01
For this question, there are three scenarios that we need to consider.
00:04
In the first scenario, we have our rectangular cross -section like so, and we're going to have 0 .254 millimeters across the top, and then we're going to have 0 .186 along the side.
00:25
And then we're going to have our really, really tiny depth, which is going to be 0 .002 millimeters, or 2 micrometers.
00:39
Then we're going to have our second and third scenarios, where in the second, we're going to rotate our cube a little bit, and we're going to have our top, which is the 0 .254, and the cross -section of 0 .002, and then we're going to have our really long depth this time of 0 .186.
01:17
And in our final scenario here, we're going to have a slightly shorter length across the top of 0 .186, and then again our tiny width of 0 .002, and then we're going to have the longest depth yet, which is going to be the 0 .254.
01:45
So now when we go ahead and calculate resistance, we remember that our resistance is equal to our resistivity times the length over the area...