Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
전동력은 전기 회로에서 전류를 생성하는 힘입니다.jeondongnyeogeun jeongi hoeroui jeonryureul saengsanghaneun himimnida.Electromotive force is the force that generates current in an electric circuit.