A 15m long copper wire has a cross-sectional radius of 3mm. If 200mA of current flow through the wire. What is voltage drop per meter ($\rho$=1.68x10$^{-8}$ $\Omega$.m) 1.19x10$^{2}$V/m a 1.19x10$^{1}$V/m b 1.19x10$^{-4}$V/m c 1.19x10$^{-3}$V/m d
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0×10^-3 m, current I = 200 mA = 0.200 A, resistivity ρ = 1.68×10^-8 Ω·m. Show more…
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