Asked by Debi
During a particular thunderstorm, the electric potential between a cloud and the ground is Vcloud - Vground = 2.9 x 108 V, with the cloud being at the higher potential. What is the change in an electron's potential energy when the electron moves from the ground to the cloud?
Answers
Answered by
drwls
The potential energy per electron must decrease by e*(delta V)
= (1.6*10^-19)*2.9*10^8
= 4.6*10^-11 Joules
delta V is positive but e is negative; hence a decrease in P.E.
Clearly a lightning strike could not take place if the change in PE were positive.
= (1.6*10^-19)*2.9*10^8
= 4.6*10^-11 Joules
delta V is positive but e is negative; hence a decrease in P.E.
Clearly a lightning strike could not take place if the change in PE were positive.
Answered by
Russell
-2..4e-11
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