I searched in both the on-line text book and the forum itself before asking; the questions are simple but they are contextual questions and that's why I may have had some problem finding answers. 1.) How is current increased within a circuit? What would some differing examples be of methods with a 9v battery @ 500ma and increasing that amperage to several amps? 2.) What are some of the "newer"* techniques to increase current AND voltage within a circuit? * This deals with improvements in engineering and components: what is available today that had NOT been around in the 1960s-70's. ~~~~~~~~~~~~~*~~~~~~~~~~~~~*~~~~~~~~~~~~~ Thank you very much for any help (or direction to find same).