From 7a37b047655d81da73da7e3b4f8519c9ba19736a Mon Sep 17 00:00:00 2001 From: arc Date: Mon, 9 Feb 2026 19:15:04 -0700 Subject: [PATCH] vault backup: 2026-02-09 19:15:04 --- education/physics/PHYS2220/Magnetism.md | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/education/physics/PHYS2220/Magnetism.md b/education/physics/PHYS2220/Magnetism.md index 586576f..13b0075 100644 --- a/education/physics/PHYS2220/Magnetism.md +++ b/education/physics/PHYS2220/Magnetism.md @@ -3,4 +3,13 @@ - 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: -$$ $\vec(F)_B = q\vec(v) \times \vec{B} $$ +$$ \vec(F_B) = q\vec(v) \times \vec{B} $$ + - $F_B$ is the magnetic force + - $q$ is the charge the force is acting on + - $v$ is the velocity of the charge + - $B$ is the magnetic field +For the magnitude of a magnetic force: + $$ |\vec(F_B)| = |q|vB\sin(\theta) $$ +For the radius of a particle's circular path: +$$ r = \frac{mv}{qB} $$For the period of a particle's circular orbit in a uniform magnetic field: +$$ \ No newline at end of file