From bfbe229d921d4243ce2bb28b59e4d1d2da7d5297 Mon Sep 17 00:00:00 2001 From: arc Date: Tue, 6 Jan 2026 08:42:37 -0700 Subject: [PATCH] vault backup: 2026-01-06 08:42:37 --- education/physics/PHYS2220/Electric Charge.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/education/physics/PHYS2220/Electric Charge.md b/education/physics/PHYS2220/Electric Charge.md index f85cfd5..156c23b 100644 --- a/education/physics/PHYS2220/Electric Charge.md +++ b/education/physics/PHYS2220/Electric Charge.md @@ -28,7 +28,7 @@ This means that to find the net force acting on a single charge, you add up all 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 at large distances decreases as the inverse *cube* of the distance. This is because the dipole has zero *net* charge. - +- In an electric field, a dipole experiences a torque that aligns it with the field. # Continuous Charge Distributions It's largely impossible to sum the electric field from every particle in a piece of matter, so the approximation is made that the charge is spread continuously over the distribution. - The number of dimensions involved changes the unit and terminology used: