CBSE Class 12-science Answered
a current of 1.0 A exists in a copper wire of cross section 1.0 mmsquare. assuming one free electron per atom calculate drift speed of free electrons in wire . the density of copper is 9000 kg / m
Asked by haroonrashidgkp | 20 May, 2018, 05:57: PM
Expert Answer
Current I related to drift velocity vd is given by
I = n×e×A×|vd|
where n is the number density of atoms , e is the charge on electron, A is area of cross section.
gram atomic weight of Copper atom 63.5 ; number density of atoms is given by
Answered by Thiyagarajan K | 21 May, 2018, 11:00: AM
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