The resistance per meter of lite cable is approximately what value?

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Multiple Choice

The resistance per meter of lite cable is approximately what value?

Explanation:
Lite cable resistance per meter is determined by copper’s conductivity and the cable’s cross-sectional area. Using copper’s resistivity (~1.68×10^-8 ohm·m) and a typical lite-cable cross-section about 0.30 mm^2, the per-meter resistance is R ≈ rho / A ≈ (1.68×10^-8) / (3.0×10^-7) ≈ 5.6×10^-2 ohm per meter, which is about 0.057 ohm/m. That matches the given value, making it the best estimate for lite cable. Keep in mind that the loop (both conductors) resistance is about twice this, affecting voltage drop along the bus.

Lite cable resistance per meter is determined by copper’s conductivity and the cable’s cross-sectional area. Using copper’s resistivity (~1.68×10^-8 ohm·m) and a typical lite-cable cross-section about 0.30 mm^2, the per-meter resistance is R ≈ rho / A ≈ (1.68×10^-8) / (3.0×10^-7) ≈ 5.6×10^-2 ohm per meter, which is about 0.057 ohm/m. That matches the given value, making it the best estimate for lite cable. Keep in mind that the loop (both conductors) resistance is about twice this, affecting voltage drop along the bus.

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