Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance if the cloud layer has an area of 1.0 km2 . If an electric field of 2.0 × 10^6 N/C makes the air break down and conduct electricity (lightning), what is the maximum charge the cloud can hold?
11.1 nF, 17.7 C
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A) in tropical desert areas. B) from tropical storms with high levels of moisture and thermal energy. C) as moist thermal winds cross over the equator. D) by all of these.
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Fill in the blank(s) with the appropriate word(s).