Physics for Scientists and Engineers Storyline CENGAGE Tenth Edition Raymond A. Serway & John W. Jewett, Jr., Physics for Scientists and Engineers, Tenth Edition. © 2021 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. CENGAGE Chapter 26 Current and Resistance Raymond A. Serway & John W. Jewett, Jr., Physics for Scientists and Engineers, Tenth Edition. © 2021 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. CENGAGE Electric Current (1 of 2) © 2021 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. CENGAGE I avg Electric Current (2 of 2) ΔΟ At I = do dt 1 A = 1 C/s + + A + + + I The direction of the current is the direction in which positive charges flow when free to do so. Ⓒ2021 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. CENGAGE Microscopic Model of Current (1 of 2) I AQ = (nA Ax) q = (nAv₁ At)q avg || AQ = nqv₁ A At + Ax 9 + Vd Δt — A Ⓒ2021 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.