Edits to “Statement”, “Solution”, “Answer”

Alexphysics edited
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revision #19161 parent #19160 ← older
en/8.2.22.md +8 −5
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### Statement
−$8.2.22.$ [Insert the problem statement]
+$8.2.22.$
+Where on the lower and upper surfaces of a round conducting plate should
+electrical contacts be placed so that the resistance between them is minimal?
+
### Solution
−The resistance between two points on a conducting plate depends on how far the current has to travel. If you place the contacts facing each other at the center of each face, the path the current takes is the shortest possible: it simply goes straight through the thickness of the plate.
+The resistance between two points on a conducting plate depends on how far the current has to travel.
−Therefore, the resistance is minimal when the contacts are located exactly at the center of each face. This way, the current flows radially and along the shortest possible path through the thickness of the plate.
+If you place the contacts facing each other at the center of each face, the path the current takes is the shortest possible because it simply goes straight through the thickness of the plate.
−$\boxed{\text{The contacts must be placed at the center of the plate from opposite sides.}}$
+Therefore, the resistance is minimal when the contacts are located exactly at the center of each face.
#### Answer
−[Insert a concise answer or boxed result]
+$\boxed{\text{The contacts must be placed at the center of the plate from opposite sides.}}$