From acdb28e03f53147973e8bb60b1838f267cdf7d2f Mon Sep 17 00:00:00 2001 From: arc Date: Tue, 6 Jan 2026 08:07:37 -0700 Subject: [PATCH] vault backup: 2026-01-06 08:07:37 --- education/physics/PHYS2220/Electric Charge.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/education/physics/PHYS2220/Electric Charge.md b/education/physics/PHYS2220/Electric Charge.md index acabd96..a6204c4 100644 --- a/education/physics/PHYS2220/Electric Charge.md +++ b/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 \ No newline at end of file +- 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