Question

The hands and arms as a conductor While doing laundry you reach to turn on the light above the washing machine. Unfortunately, you touch an exposed $120-\mathrm{V}$ wire in the broken switch box. Your other hand is supporting you on the top of the grounded washing machine. Assume that the resistance is $100,000 \Omega$ across the dry skin of each hand and that the resistivity of tissue inside your arms and body is $5 \Omega \cdot \mathrm{m}$. (a) Estimate the total resistance of the tissue inside your arms from one side to the other (ignore the resistance across your chest). (b) Estimate the total resistance across the skin of one hand through the tissue in your arms and then across the skin of your other hand. (c) Are you in danger?

          The hands and arms as a conductor While doing laundry you reach to turn on the light above the washing machine. Unfortunately, you touch an exposed $120-\mathrm{V}$ wire in the broken switch box. Your other hand is supporting you on the top of the grounded washing machine. Assume that the resistance is $100,000 \Omega$ across the dry skin of each hand and that the resistivity of tissue inside your arms and body is $5 \Omega \cdot \mathrm{m}$.
(a) Estimate the total resistance of the tissue inside your arms from one side to the other (ignore the resistance across your chest).
(b) Estimate the total resistance across the skin of one hand through the tissue in your arms and then across the skin of your other hand. (c) Are you in danger?

Added by Emily A.

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