Electric Current & DC Circuits

Aug 15, 2015 · Electric Current & DC Circuits. PSI . AP . Physics . 2. Name _____ Multiple-Choice. The length and radius of an aluminum wire is quadrupled. By which factor does the resistance change? 2 (B) 1/2 (C) 1/4 (D) 1 . A copper wire has a length L and cross-sectional area A. ................
................