What is the resistance per m of the bar?a. 0.12 ?Ω/mb. 1.20 ?Ω/mc. 42 ?Ω/md. 12.3 ?Ω/me. none of the choices
The question is a little ambiguous. I will assume the voltage drop per length is 1.2 mV/cm or 0.12 Volts/meter. R V/I 0.12 V/m / 1200 Amps 100 micro-ohms/meter. So answer e would be correct. Hope this helps, Newton1Law
RE/I1.2E-3/1.2E31E-6 ohm/cm1E-4 ohms/m.
