InterviewSolution
Saved Bookmarks
| 1. |
(a) Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 1.0 x 107 m2 carrying a current of 1.5 A. Assume that each copper atom contributes roughly one conduction electron. The density of copper is 9.0 x 10 kg/mand its atomic mass is 63.5 u. (b) Compare the drift speed obtainedabove with, (i) thermal speeds of copper atoms at ordinarytemperatures, (ii) speed of propagation of electric field along theconductor which causes the drift motion. |
| Answer» | |