Here's a reminder that current is defined as the flow of positive charge carriers, even though in metals negative electrons flow.
-----Current and Resistance playlist - https://www.youtube.com/playlist?list=PL9_sR6QqqcykKpW13v9WLnFj_nych6sdI
-----Use the channel, or take the courses at edX - https://www.edx.org/course?search_query=hafner+ricex
-----This material was produced by Rice Online - http://online.rice.edu
