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--- 184_notes:examples:week4_charge_ring [2021/05/25 14:35] – schram45
+++ 184_notes:examples:week4_charge_ring [2021/05/25 14:38] (current) – schram45
@@ Line 16: / Line 16: @@
 We can represent the ring and  $P$  as follows, with coordinates chosen conveniently. We choose cylindrical coordinates because we will be integrating over the length of the ring, and being able to represent its radius as constant will simplify calculations.
 {{ 184_notes:4_ring_charge.png?350 |Ring Charge Representation}}
-<WRAP TIP>
-===Approximation===
-The ring is in a perfect circle.
-</WRAP>
 ====Solution====
@@ Line 27: / Line 22: @@
 We begin with an approximation, which will make our calculations simpler, and makes sense based on our representation:
   * The thickness of the ring is infinitesimally small, and we can approximate it as a circle.
+  * The ring is in a perfect circle.
 </WRAP>
 We also make a plan to tackle the integrating, which is a little tougher in cylindrical coordinates.
@@ Line 48: / Line 44: @@
 <WRAP TIP>
 ===Assumption===
-The charge is evenly distributed along the ring. This also assumes the ring is a perfect conductor where charges will distribute evenly along the conductor.
+The charge is evenly distributed along the ring. This also assumes the ring is a perfect conductor where charges will distribute evenly along the conductor. If this were not true, the charge density along the ring would not be constant.
 </WRAP>