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(Solved): 5. Consider Figure 6 below, which shows the circuit for the Electric Fence with only one Brainiac to ...



5. Consider Figure 6 below, which shows the circuit for the Electric Fence with only one Brainiac touching the wire standing on the ground (bare feet) and facing you. A simplified electrical circuit is drawn to show the path for the current flow. Using 0.5 M? as the nominal resistance from Brainiac’s right arm (R1) and 0.5 M? resistance from his chest to his feet (R3), calculate the total Voltage required in the fence to produce a 50 mA current through his body (enough to hurt). 6. Keeping the fence at the Voltage value you found in part 5, now add a second Brainiac holding hands with the first Brainiac, as shown in Figure 7 below. Both Brainiacs are standing on the ground with bare feet, with the same resistances through their bodies and hands as in Step 5. What is the current felt by the first Brainiac though his hand on the fence ( \( \mathrm{R}_{1} \) )? What is the current felt by the second Brainiac in his right hand \( \left(\mathrm{R}_{4}\right) \) ? 7. Now add a third Brainiac to the picture, as shown in Figure 8. What current is felt by each Brainiac through their right hands ( \( \mathrm{R}_{1}, \mathrm{R}_{4} \), and \( \mathrm{R}_{7} \) )? 8. What current is felt by Brainiac 3 in his right hand ( \( \mathrm{R}_{7} \) ) if Brainiac 2 stands on a piece of Styrofoam, insulating his feet from the ground?



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