A copper transmission cable 100 km long and 10.0 cm in diameter carries a current of...

A copper transmission cable 100 km long and 10.0 cm in diameter carries a current of 125 A. The copper resistivity is1.72 × 10^-8 Ω.m.

(a) What is the potential drop across the cable?

(b) How much electrical energy is dissipated as thermal energy per hour?

(c) What temperature increase is required to increase the cable resistance by 5.00% ? [Thermal resistivity coefficient of copper at 25 deg C is 0.00393 (°C)^-1]

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genius_generous answered 1 year ago

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