two cows, with approximately 1.51 m between their front and hind legs, are stand

Question

two cows, with approximately 1.51 m between their front and hind legs, are standing under a tree during a thunder storm
a) if the equipotential surfaces about the tree just after the lightning strike are as shown, what is the average electric field between Cow A's front and hind legs?
b) which cow is more likely to be killed? 510 kV 102 kv 153 kV 204 k Cow B Trèe Cow A (a) If the equipotential surfaces about the tree just after a lightning strike are as shown, what is the average electric field between Cow A's front and hind legs? (b) Which cow is more likely to be killed?

Explanation / Answer

a)

potential difference = 204 KV - 51.0 KV = 153 KV

d = 1.51 m

use:

E = V/d

= 153 KV / 1.51 m

= 101 KV/m

Answer: 101 KV/m

b)

potential difference is larger for cow A than cow B. This will make higher current flow through A

So, A is more likely to be killed

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