From Capacitors To Flashlight

Description
Work done in seperating two oppositely charged plates, definition of field field, energy density and potential energy stored in an electric field is described. It leads to thre definition of capacitance which is applied to parallel plate and spherical capacitors.A large capacitor is charged to 3000V for fifteen minutes and then discharged to show impressive result.Working of camera flash is explained and demonstrated. A beautiful demonstration is shown by the images of a bullet fired through a light bulb.

Prof. Walter Lewin, 8.02 Electricity and Magnetism, Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed January 14, 2011). License: Creative Commons BY-NC-SA: http://ocw.mit.edu/terms/#cc