**(a)**

$\overline{)\begin{array}{rcl}{\mathbf{I}}& {\mathbf{=}}& \frac{\mathbf{P}}{\mathbf{V}}\end{array}}$

Convert Energy to power:

$\overline{){\mathbf{P}}{\mathbf{=}}\frac{\mathbf{E}}{\mathbf{t}}}$

Assume 1 month = 30 days:

$\mathbf{t}\mathbf{=}\mathbf{(}\mathbf{30}\mathbf{}\mathbf{days}\mathbf{)}\mathbf{\left(}\frac{\mathbf{24}\mathbf{}\mathbf{h}}{\mathbf{1}\mathbf{}\mathbf{day}}\mathbf{\right)}$

A typical American family uses 1000 kWh of electricity a month.

(a) What is the average rms current in the 120 V power line to the house?

(b) On average, what is the resistance of a household?

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