PHYS1002 Study Guide - Final Guide: Farad, Equipotential, Electric Field
Document Summary
Physics 8e cutnell and johnson summary of phys1002 content. Chapter 19 electric potential energy and the electric potential. There are parallels between gravitational potential energy and electric potential energy. Similarly, just as the work done by the gravitational force is the difference between gravitational potentials, the work done is the difference in electric potential energy (and both are measured in joules! 19. 2 the electric potential difference: because the electric force is given by: The work done depends on the charge being moved! It is useful to express this work done as a work-per-(cid:272)ha(cid:396)ge (cid:271)asis i(cid:374) so(cid:373)e (cid:272)ases. This is a bit of an odd formula, so we introduce the concept of the electric potential. This is different from the electric potential energy! The electric potential of a s(cid:373)all test (cid:272)ha(cid:396)ge di(cid:448)ided (cid:271)(cid:455) the test (cid:272)ha(cid:396)ge (cid:894)just like the fo(cid:396)(cid:373)ula a(cid:271)o(cid:448)e(cid:895). Thus: at a given point is the epe.
