DC theory / 
in partnership with the NJATC 
 - 3rd ed. 
 - Clifton Park, NY :  Delmar Cengage Learning,  c2010 
 - xv, 242 p. :  ill. (chiefly col.) ;  29 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9781435499829 1435499824 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric circuits--Direct current<br/>Electric currents, Direct