A person accidently grabs conductors connected to each end of a dc voltage source, one in...

A person accidently grabs conductors connected to each end of a dc voltage source, one in each hand.

a) Using the resistance values for the human body provided in Problem, what is the minimum source voltage that can produce electrical shock sufficient to cause paralysis, preventing the person from letting go of the conductors?

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b) Is there a significant risk of this type of accident occurring while servicing a personal computer, which typically has 5 V and 12 V sources?

Problem

a) Suppose the power company installs some perspective equipment that could provide a 250 V shock to a human being. Is the current that results dangerous enough to warrant posting a warning sign and taking other precautions to prevent such a shock? Assume that if the source is 250 V, the resistance of the arm is 400 Ω, the resistance ol the trunk is 50 Ω, and the resistance of the leg is 200 Ω. Use the model given in Fig. 2.25(b).

b) Find resistor values from Appendix H that could be used to build a circuit whose behavior is the closest to the model described in part (a).