The Earth has an electric field of 150 N/C near its surface.Find the electrical energy contained in a volume of air equal to the volume of a typical student (0.075 m³).

Question

Quizplus · Accepted Answer

The electrical energy contained in a volume of air can be calculated using the formula E = (1/2) * ε * V^2, where ε is the electric field strength and V is the volume of the air. Plugging in the given values, we get E = (1/2) * 150 N/C * (0.075 m^3)^2 = 7.5 * 10^-9 J or 7.5 * 10^-7 mJ. Thus, the best choice is option B.

The Earth Has an Electric Field of 150 N/C near Its