What is the change in an electron's electric potential energy when the electron moves from ground to cloud?

During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 3.70 108 V, with the cloud being at the higher potential. What is the change in an electron's electric potential energy when the electron moves from the ground to the cloud?____JWhat is the change in an electron's electric potential energy when the electron moves from ground to cloud?
The change in PE is:

q * V

= -1.6e-19 * 3.7e8

= -1.6*3.7*e-11

= -5.92e-11 (J)



The minus sign reminds you that the PE is lower now (naturally, otherwise it wouldn't have gone there).

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