IPA: /ˌɛlɛkˈtroʊˌstætɪks/
KK: /ɪˌlɛk.trəʊˈstæt.ɪks/
The branch of physics that studies electric charges at rest and the forces between them.
Electrostatics is important in understanding how charged objects interact with each other.
Electrostatics is formed from "electro-" (from Greek "ēlektron", meaning amber, which was known to produce static electricity when rubbed) and "statics" (from Greek "statikos", meaning causing to stand or stationary). The term refers to the study of stationary electric charges and their effects.
Think of 'amber' ('ēlektron') which produces static electricity when rubbed, and 'statics' meaning stationary. This helps you remember that electrostatics is about the study of stationary electric charges.