This program explores how electric energy became an essential tool with the advent of electricity storage, allowing the flow of current to do useful work. Conductors and insulators, voltage, and current are defined and examined, using a water flow model to help ensure understanding. The difference between electron flow and current flow models is explained, and the nature of direct and alternating current (both one- and two-phase) is developed. Specific modules include Tapping a Source, Conductors and Insulators, Direction of Flow, Potential Difference, Measuring Voltage, Measuring Current, Alternating Current, and AC Voltage. Correlates to all National CTE Organizational Standards (including the provisions of the Perkins Act).

Encoded with permission for digital streaming by Infobase on May 08, 2008. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.

Batteries: Practical Source of Electric Current (3:43) -- Conductors and Insulators (1:43) -- Electricity: Direction of Flow (2:46) -- Electric Potential Difference (3:37) -- Electricity: Measuring Voltage (1:51) -- Electricity: Measuring Current (3:04) -- Electricity: Alternating Current (3:53) -- Alternating Current: AC Voltage (2:33) -- Two-Phase Electric Service (2:19).