Chapter 27, Problem 52EAP

The conductive tissues of the upper leg can be modeled as a $\text{4}0$ -cm-long, $\text{12}$ -cm-diameter cylinder of muscle and fat. The resistivities of muscle and fat are $\text{13 }\Omega \text{m}$ and $25\Omega \text{m}$ , respectively. One person’s upper leg is $\text{82}\%$ muscle, $\text{18}\%$ fat. What current is measured if a $1.5\text{V}$ potential difference is applied between the person’s hip and knee?