# Direct and Alternating Current

## Differentiation between one-directional flow of a current and current that reverses direction within a circuit.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Direct and Alternating Current

by CK-12 //at grade
The difference between direct current and alternating current.
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13

## 직류와 교류

by Whakuk Lee //at grade
직류와 교류의 차이
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## Direct and Alternating Current

by Doug Davidson //basic
The difference between direct current and alternating current.
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## Direct and Alternating Current

by Christopher von Nagy //basic
The difference between direct current and alternating current.
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## Direct and Alternating Current

by Walter Kidder //at grade
The difference between direct current and alternating current.
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## Direct and Alternating Current

by Bridget Biernacki //at grade
The difference between direct current and alternating current.
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• Video

## Direct and Alternating Current

by Mark Holmstrom //at grade
A video discussing the differences between and the pros and cons of using AC and DC power. Video courtesy of Enerdynamics.
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• Real World Application

## War of the Currents

by CK-12 //basic
Find out how the U.S. electrical grid came to carry alternating current and why direct current might make more sense today.
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• Flashcards

## Direct and Alternating Current

by Ellaine Chou //basic
These flashcards are here to help you better understand middle school physical science.
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• Flashcards

## Direct and Alternating Current

by Kyle Bardman //basic
These flashcards help you better understand Physical Science for middle school.
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