74CHAPTER 17 Problem Solutions ±²±²±17.1The charge that moves past the cross section is ( )QI t∆=∆, and the number of electrons is ( )()3201980.010C s10.0 min60.0 s0010electrons1.6010CItQnee−−∆∆==××min3.×The negatively charged electrons move in the direction opposite to the conventional current flow. 17.2The drift speed in a conductor of cross-sectional area Aand carrying current Iis dvInqA=, where nis the number of free charge carriers per unit volume and qis the charge of each of those charge carriers. In the given conductor,
This is the end of the preview.
access the rest of the document.