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education/physics/PHYS2220/Electric Charge.md

@@ -27,4 +27,6 @@ This means that to find the net force acting on a single charge, you add up all
 # The Electric Dipole
 An electric dipole consists of two point charges of equal magnitude but opposite sign. Many molecules behave like dipoles.
 - **Electric dipole moment** ($p$) is defined as the product of the charge $q$ and the separation $d$ between the two charges making up the dipole. $p = qd$
-- The dipole field 
+- The dipole field at large distances decreases as the inverse *cube* of the distance. This is because the dipole has zero *net* charge.
+
+# Continuous Charge Distributions