The gure below shows a wire in the shape of three segments. The rst segment is vertical and comes from y = 00 down to y = R. The second seg- ment...

The figure below shows a wire in the shape of three segments. The first segment is vertical and comes from y = ∞ down to y = R. The second segment goes from the point (0, R) to the point (R, 0) while the third segment is horizontal and goes from x = R to x = ∞.