A person who happened to be walking barefoot on wet ground near an electrical transmissiontower during a 1.0 s fault in operation suffered ventricular fibrillation as a current of 0.2 Aflowed through the heart. The electrical pathway was through one foot, up the leg, throughthe torso and down the other leg to ground.The resistance of a leg standing on wet soil is 300 Q The resistance of the torso is 1 000 Q(a) What was the total resistance of the electrical pathway through the body?(b) What must have been the potential difference between the locations of the feetduring the fault?(c) How much power was dissipated in the person's body?(d) How would the magnitude of current flowing through the human compare with theleakage current flowing through the wet ground? Justify your view.

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A person who happened to be walking barefoot on wet ground near an electrical transmission tower during a 1.0 s fault in operation suffered ventricular fibrillation as a current of 0.2 A flowed through the heart. The electrical pathway was through one foot, up the leg, through the torso and down the other leg to ground. The resistance of a leg standing on wet soil is 300 Q The resistance of the torso is 1 000 _O (a) What was the total resistance of the electrical pathway through the body? (b) What must have been the potential difference between the locations of the feet during the fault? (c) How much power was dissipated in the person's body? (d) How would the magnitude of current flowing through the human compare with the leakage current flowing through the wet ground? Justify your view.

A person who happened to be walking barefoot on wet ground near an electrical transmission tower during a 1.0 s fault in operation suffered ventricular fibrillation as a current of 0.2 A flowed through the heart. The electrical pathway was through one foot, up the leg, through the torso and down the other leg to ground. The resistance of a leg standing on wet soil is 300 Q The resistance of the torso is 1 000 _O (a) What was the total resistance of the electrical pathway through the body? (b) What must have been the potential difference between the locations of the feet during the fault? (c) How much power was dissipated in the person's body? (d) How would the magnitude of current flowing through the human compare with the leakage current flowing through the wet ground? Justify your view.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 63P

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Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

Question

A person who happened to be walking barefoot on wet ground near an electrical transmission
tower during a 1.0 s fault in operation suffered ventricular fibrillation as a current of 0.2 A
flowed through the heart. The electrical pathway was through one foot, up the leg, through
the torso and down the other leg to ground.
The resistance of a leg standing on wet soil is 300 Q The resistance of the torso is 1 000 Q
(a) What was the total resistance of the electrical pathway through the body?
(b) What must have been the potential difference between the locations of the feet
during the fault?
(c) How much power was dissipated in the person's body?
(d) How would the magnitude of current flowing through the human compare with the
leakage current flowing through the wet ground? Justify your view.

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