11-26-2007_____asst_27_query

11-26-2007_____asst_28_query

11-26-2007_____asst_19_query

11-26-2007_____asst_30_query

11-28-2007_____current_flow_and_energy

11-28-2007_____capacitors_and_current____voltage____energy

02-10-2008_____test_taken