From a337aecc254f7ba82e4c621e0dfc57958eadd2c6 Mon Sep 17 00:00:00 2001 From: arc Date: Mon, 9 Feb 2026 19:00:04 -0700 Subject: [PATCH] vault backup: 2026-02-09 19:00:04 --- education/physics/PHYS2220/Magnetism.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/education/physics/PHYS2220/Magnetism.md b/education/physics/PHYS2220/Magnetism.md index ccc9eab..586576f 100644 --- a/education/physics/PHYS2220/Magnetism.md +++ b/education/physics/PHYS2220/Magnetism.md @@ -1,3 +1,6 @@ - Magnetic fields are represented with the symbol $\vec{B}$ - Magnetism is based in *electric charge*, specifically the motion of that charge. -- The magnetic force is always at right angles to both the velocity $\vec{v}$, and the magnetic f \ No newline at end of file +- The magnetic force is always at right angles to both the velocity $\vec{v}$, and the magnetic field $\vec{B}$ +- The force is greatest when the charge is moving at right angles and is zero for motion parallel to the field. THe force is generally proportional to $\sin(\theta)$, where $\theta$ is the angle between the velocity $\vec{v}$, and the field $\vec{B}$. +The formula that describes magnetic force compactly is: +$$ $\vec(F)_B = q\vec(v) \times \vec{B} $$