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(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

Answer & Explanation Solved by verified expert
4.5 Ratings (606 Votes)
Since Resistance is given byR rhoLARL rhoAFor steelrho resistivity of steel 20107 ohmmgiven RL 00430 ohmkm 00430103    See Answer
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