Differences

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--- 184_notes:dq [2020/08/20 16:01] – dmcpadden
+++ 184_notes:dq [2021/05/25 16:07] – dmcpadden
@@ Line 15: / Line 15: @@
 [{{  184_notes:dl.png?50|Vertical "little bit of length", $dy$}}]
-=== Charge on a line ===
+==== Charge on a line ====
 For a **1D uniform charge density** (such as lines of charge), we use the variable $\lambda$, which has units of $\frac{C}{m}$ (coulombs per meter). You can calculate $\lambda$ by taking the total charge that is spread over the total length:
@@ Line 26: / Line 26: @@
 [{{  184_notes:da.png?200|"Little piece of area", $dA$}}]
-=== Charge on a surface ===
+==== Charge on a surface ====
 For a **2D uniform charge density** (such as sheets of charge), we use the variable $\sigma$, which has units of $\frac{C}{m^2}$ (coulombs per meter squared). You can calculate $\sigma$ by taking the total charge that is spread over the total area:
@@ Line 34: / Line 34: @@
 You can write the "little bit of area" in a variety of ways, depending on the shape of charge.
-=== Charge in a volume ===
+==== Charge in a volume ====
 Similarly, for a **3D uniform charge density** (such as a sphere of charge), we use the variable $\rho$, which has units of $\frac{C}{m^3}$ (coulombs per meter cubed). You can calculate $\rho$ by taking the total charge that is spread over the total volume:
@@ Line 66: / Line 66: @@
 ====Examples====
-[[:184_notes:examples:Week4_tilted_segment|A Tilted Segment of Charge]]
+  * [[:184_notes:examples:Week4_tilted_segment|A Tilted Segment of Charge]]
+  *  [[:184_notes:examples:Week4_two_segments|Two Segments of Charge]]
+    *  Video Example: Two Segments of Charge
+{{youtube>BiqTwMrD774?large}}
-[[:184_notes:examples:Week4_two_segments|Two Segments of Charge]]