A student touches the metal pads of a defibrilator with bare hands, one hand on each pad. The defibrilator is set to deliver a 500 V electric pulse. The student's hands are dry and the resistance between the skin and the pads is 1000 Ohms. He is wearing rubber Crocs clogs, which provide 20 MOhms resistance between his feet and the ground. Please answer the following questions: 1. What is the electrical circuit between the hands, pads, feet, and ground? Please draw the circuit. 2. What current will pass through the hands of the student? 3. Will he feel the current passing through his hands? 4. What current passes through the feet of the student into the ground? 5. Will he feel the current passing through his feet? For the resistance of different parts of the body please refer to figure 26.12 on page 861.

nce Heart fibrillation, likely fatal > 100 > 500 FIGURE 26.12 Resistance model of the body. Arm: 310 0 Arm: 310 0 WW Torso: 30 0 Leg: 290 0 Leg: 290 0 When current traverses the torso between any two points (arm to arm, arm to leg, leg to leg) this adds a resistance of 30 0