In an old house, the wires leading to a 120 V outlet have a total resistance of 0.45 $\Omega$. When you plug in a hair dryer, it draws a 12.0 A current.
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45 \Omega$, and the current $I = 12.0 A$. We can use Ohm's law to find the voltage drop across the wires. Ohm's law states that $V = IR$. Show more…
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