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NCEA Level 1 Science/Contents/DC Electricity
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NCEA Level 1 Science Chapter
Exam Revision Energy
=DC Electricity=
About the Achievement Standard
thumb|200px|Panasonic Oxyride batteries
Introduction
Direct current electricity is the one way flow of electric charges. It can be produced by sources like batteries. The current may flow through a conductor such as a wire, semiconductors such as insulators, or even through a vacuum. The electric charge flow in a constant direction, distinguishing it from alternating current (AC).
Contents
Voltage
Current
Resistance
Power in DC circuits
Circuit diagrams
Voltage and current behaviour in circuits
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