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23 Nov 2019
A current of I=8.0\;\rm A is flowing in a typical extension cord oflength L=3.00\;\rm m. The cord is made of copper wire with diameterd=1.5\;\rm mm.
The charge of the electron is e=1.6\times10^{-19}\;\rm C. Theresisitivity of copper is \rho=1.7\times10^{-8}\; \rm \Omega\cdotm. The concentration of free electrons in copper is n=8.5\times10^{28}\; \rm m^{-3}.
Find the drift velocity v_d of the electrons in the wire.
A current of I=8.0\;\rm A is flowing in a typical extension cord oflength L=3.00\;\rm m. The cord is made of copper wire with diameterd=1.5\;\rm mm.
The charge of the electron is e=1.6\times10^{-19}\;\rm C. Theresisitivity of copper is \rho=1.7\times10^{-8}\; \rm \Omega\cdotm. The concentration of free electrons in copper is n=8.5\times10^{28}\; \rm m^{-3}.
Find the drift velocity v_d of the electrons in the wire.
when a 3A is flowing through it?