Problem

What must the emf $\mathcal{E}$ in Figure 19.71 b…

03:25

Problem 87 Hard Difficulty

A power plant transmits 150 $\mathrm{kW}$ of power to a nearby town, through wires that have total resistance of 0.25$\Omega$. What percentage of the power is dissipated as heat in the wire if the power is transmitted at (a) 220 $\mathrm{V}$ and $(\mathrm{b}) 22 \mathrm{kV} ?$

Answer

a. 77$\%$
b. 0.0077$\%$

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Physics 102 Electricity and Magnetism

College Physics

Chapter 19

Current, Resistance, and Direct-Current Circuit

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Video Transcript

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