(a) A steel power transmission line has a resistance of 0.0430
Ω/km. What is its mass...
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Physics
(a) A steel power transmission line has a resistance of 0.0430Ω/km. What is its mass per kilometer (in kg/km)? (Assume thedensity of steel is 7.8 ✕ 103 kg/m3.)
  ________ kg/km
(b) What is the mass per kilometer (in kg/km) of an iron linehaving the same resistance? (Assume the density of iron is 7.8 ✕103 kg/m3.)
_______ kg/km
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4.5 Ratings (606 Votes)
Since Resistance is given byR rhoLARL rhoAFor steelrho resistivity of steel 20107 ohmmgiven RL 00430 ohmkm 00430103
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