vault backup: 2026-09-06 23:41:08

2026-09-06 23:41:08 -04:00
parent c48a868b5e
commit a777a53d76
13 changed files with 261 additions and 115 deletions
@@ -0,0 +1,9 @@
+[[Electric Force, Field, and Potential]]
+# Summary
+* Charge is quantized, integer multiple of $e=1.6x10^{-19}$.
+* $q=\pm ne$
+* Coulomb's law: $F=k\frac{p_1p_2}{n^2}$; directly proportional to charge, inversely proportional to distance.
+* Same signs repel, opposite signs attract.
+* Electric force is stronger than gravity for tiny particles, gravity controls large scale because big objects are usually neutral.
+* Electric permittivity measures how much a material polarizes in a field. Conductors let charge move freely, insulators don't.
+* Only need to calculate force for 4 or less interacting charges unless situation is highly symmetrical.