A person who is gloveless and barefoot stands on a grounded platform while holdi

Question

A person who is gloveless and barefoot stands on a grounded platform while holding onto a grounded metal railing with one hand, and grabs a bare, hot wire with an operating voltage V that is powering a load with resistance  R=1000  . Various parts of his body has the following resistance: Skin resistance for each limb Rskin=2700,Rarm=300,Rtorso=30,Rleg=300.

Part A: What current runs through his torso upon touching the hot wire?
Itorso=V/1000   Itorso=V/3330   Itorso=V/3630   Itorso=V/3530   Itorso=V/1080   Itorso=V/801   Itorso=V/4030   Itorso=V/3780   Itorso=V/28

Part B:What is the power dissipated across the torso?
Ptorso=V^2/439230    Ptorso=V^2/684030    Ptorso=V^2/369630    Ptorso=3V^2/100000    Ptorso=15V^2/392    Ptorso=V^2/38880    Ptorso=V^2/476280    Ptorso=V^2/28830    Ptorso=3V^2/1624090  

Thank you very much!

Explanation / Answer

A) Itorso = V/Rnet = V/(2700+300+300+30) = V/3330 A

B) Power dissipated is P = itorso^2*R = (V/3330)^2*30 = V^2/369630

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