WATCH "CHARGES IN MOTION"
THERE SHOULD BE NET MOVEMENT OF CHARGE ACROSS A CROSSSECTIONAL AREA
CURRENT IS STEADY IF THERE IS NO BUILD UP OF CHARGE
THE AMOUNT OF CHARGE CROSSING UNIT AREA IS SAME EVERYWHERE IN THE CONDUCTOR
USUALLY WE THINK OF WIRES CONDUCTING A CURRENT, CONDUCTORS CONDUCTING (THEY HAVE CHARGES THAT MOVE)
