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# (a) Find the voltage drop in an extension cord having a $0.0600-\Omega$ resistance and through which 5.00 A is flowing. (b) A cheaper cord utilizes thinner wire and has a resistance of $0.300\ \Omega.$ What is the voltage drop in it when 5.00 A flows? (c) Why is the voltage to whatever appliance is being used reduced by this amount? What is the effect on the appliance?

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### 1 Concepts and Principles

$\textbf{Ohm's Law}$: The current $I$ through a circuit element (other than a battery) can be determined by dividing the potential difference $\Delta V$ across the circuit element by its resistance $R$:

$\begin{gather*} I = \dfrac{\Delta V}{R} \tag{*} \end{gather*}$

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