indicates one reason no one shouldstand under a tree during a lightningstorm. If lightning comes down theside of the tree, a portion can jumpover to the person, especially if thecurrent on the tree reaches a dry regionon the bark and thereafter musttravel through air to reach theground. In the figure, part of the lightning jumps through distanced in air and then travels through the person (who has negligibleresistance relative to that of air because of the highly conductingsalty fluids within the body).The rest of the current travels throughair alongside the tree, for a distance h. If d/h = 0.400 and the totalcurrent is I = 5000 A, what is the current through the person?
indicates one reason no one should
stand under a tree during a lightning
storm. If lightning comes down the
side of the tree, a portion can jump
over to the person, especially if the
current on the tree reaches a dry region
on the bark and thereafter must
travel through air to reach the
ground. In the figure, part of the lightning jumps through distance
d in air and then travels through the person (who has negligible
resistance relative to that of air because of the highly conducting
salty fluids within the body).The rest of the current travels through
air alongside the tree, for a distance h. If d/h = 0.400 and the total
current is I = 5000 A, what is the current through the person?
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