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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 $(\mathrm{b}) 22 \mathrm{kV} ?$

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

Physics 102 Electricity and Magnetism

Chapter 19

Current, Resistance, and Direct-Current Circuit

Electric Charge and Electric Field

Gauss's Law

Electric Potential

Capacitance and Dielectrics

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Cornell University

University of Michigan - Ann Arbor

Simon Fraser University

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