Question

examine the following data table showing the rate of energy usage vs current under some constant resistance.
estimate the resistance of this device.

\

$$\begin{tabular}{|l|l|} \\hline \\text{current (amps)} & \\text{rate of energy usage (j/s)} \\\\ \\hline 1 & 20.0 \\\\ \\hline 2 & 80.0 \\\\ \\hline 3 & 180 \\\\ \\hline 4 & 320 \\\\ \\hline 5 & 500 \\\\ \\hline \\end{tabular}$$

Explanation:

Identify the relationship between power, current, and resistance

$$ P = I^2 R $$

Calculate the resistance using data points

$$
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$$

State the estimated resistance

$$ R = 20\ \Omega $$

Answer:

\(20\ \Omega\)