Lessons In Electric Circuits, Volume II - AC 
Publisher: ebook | March 07, 2007 | 558 pages | ASIN: B0036DEB8U | File type: PDF | 3,8 mb
 
Most
 students of electricity begin their study with what is known as direct 
current (DC), which is electricity °owing in a constant direction, 
and/or possessing a voltage with constant polarity. DC is the kind of 
electricity made by a battery (with de.nite positive and negative 
terminals), or the kind of charge generated by rubbing certain types of 
materials against each other.
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