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War of the Current? Basic

Find out how the U.S. electrical grid came to carry alternating current and why direct current might make more sense today.

It is an educational content of CK-12 Foundation (to access some of the CK-12 ...

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The difference between direct current and alternating current.

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Name the people credited with these inventions. Practically every invention was the work of several people. These are the ones who got the credit.

It is an educational content by JetPunk, site that con ...