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--- 184_notes:examples:week2_electric_field_negative_point [2021/05/17 23:00] – schram45
+++ 184_notes:examples:week2_electric_field_negative_point [2021/05/19 15:11] (current) – schram45
@@ Line 7: / Line 7: @@
   * The point  $P$  is a distance  $R$  away from the charge, with the orientation shown below in our representation.
   * The electric field from the point charge at a particular observation location can be written as  $\vec{E} = \frac{1}{4\pi\epsilon_0}\frac{q}{r^2}\hat{r},$  where  $q$  represents the charge,  $r$  is the distance, and  $\hat r$  is the unit-vector pointing from the point charge source to the observation location.
-===Assumptions===
-  * Point charge assumption: Necessary to use E-Field equation.
-  * Constant charge: Makes charge in E-field equation not dependent on time or space as no information is given in problem suggesting so.
-  * Charge is not moving: This makes our separation vector fixed in time as a moving charge would have a changing separation vector with time.
 ===Representations===
 [{{ 184_notes:2_potential_negative_point.png?150 |Negative Point Charge -Q, and Point P}}]
+<WRAP TIP>
+===Assumptions===
+  * Constant charge: Makes charge in electric field equation not dependent on time or space as no information is given in problem suggesting so.
+  * Charge is not moving: This makes our separation vector fixed in time as a moving charge would have a changing separation vector with time.
+</WRAP>
 ===Goal===