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--- 184_notes:rhr [2022/10/26 15:06] – valen176
+++ 184_notes:rhr [2022/11/06 16:08] (current) – valen176
@@ Line 29: / Line 29: @@
 ====Method 3 - Shortcut for Magnetism====
-In this method, you start by pointing your thumb in the direction of the velocity of a point charge, then you curl your fingers. $\vec{B}$ will point in directions tangent to the circle your fingers make as they curl.
+In this method, you start by pointing your thumb in the direction of the velocity of a point charge, then you curl your fingers. $\vec{B}$ will point in directions tangent to the circle your fingers make as they curl. This works for a positive charge, if the charge is negative, flip your hand and point your thumb in the direction of $-\vec{v}$ instead.
 [{{  184_notes:rhrv3b.png?200|Shortcut}}]
+==== Video Overview of the 3 Methods ====
+{{youtube>tvv72xl164c?large}}