A copper wire of length and cross-sectional area carries a steady current of when a…

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

A copper wire of length 2.0 m2.0\,\text{m} and cross-sectional area 1.0 mm21.0\,\text{mm}^2 carries a steady current of 3.0 A3.0\,\text{A} when a potential difference of 0.50 V0.50\,\text{V} is applied across its ends. \newline(i) Calculate the drift velocity of electrons in the wire. \newline(ii) Hence determine the mobility of electrons in the copper wire.\newline(Take n=8.5×1028 m−3n=8.5\times10^{28}\,\text{m}^{-3} and e=1.6×10−19 Ce=1.6\times10^{-19}\,\text{C}.)

Related theory

Browse the problem library