Lightning strikes can involve currents as high as 25,000 A that last for about 40 s If a person is struck by a bolt of lightning with these properties, the current will pass through his body We shall assume that his mass is 75 kg, that he is wet (after all, he is in a rainstorm) and therefore has a resistance 1 0 k of and that his body is all water (which is reasonable for a rough, but plausible, approximation) (a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water (b) Given that the internal body temperature is about 37C, would the persons temperature actually increase that much Why not What would happen first

Question: Lightning strikes can involve currents as high as 25,000 A that last for about 40 s. If a person is struck by a bolt of

Lightning strikes can involve currents as high as 25,000 A that last for about 40 μs. If a person is struck by a bolt of lightning with these properties, the current will pass through his body. We shall assume that his mass is 75 kg, that he is wet (after all, he is in a rainstorm) and therefore has a resistance 1.0 kΩ of and that his body is all water (which is reasonable for a rough, but plausible, approximation).

(a) By how many degrees Celsius would this lightning bolt increase the temperature of 75 kg of water?

(b) Given that the internal body temperature is about 37°C, would the person’s temperature actually increase that much? Why not? What would happen first?

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