## College Physics (4th Edition)

We can find the distance above the Earth's surface: $E~d = \Delta V$ $d = \frac{\Delta V}{E}$ $d = \frac{1.00\times 10^8~V}{3.33\times 10^5~V/m}$ $d = 300~m$ The maximum possible height above the Earth's surface for the bottom of the thundercloud is 300 meters.