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3-Year Streaming

Electric Current

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). A viewable/printable instructor’s guide is available online. A Shopware Production. (26 minutes)

Playing preview clip:
Batteries: Practical Source of Electric Current
Electricity flows through wires. Evidence of electric current is seen in lightening and in sparks ignited by static electricity. Batteries allow for storage of electricity. Stacks of electrochemical cells increase the charges at both ends.