The electrical breakdown of an insulator occurs when an electric field becomes large enough to ionize the insulator, allowing electrical current to flow-lightning is an example of the electrical breakdown of air. The electrical breakdown of air occurs when the electric field reaches about $3 imes 10^6 mathrm{~N} / mathrm{C}$. Estimate the total static charge on your body when you generate a static spark with your fingertip when getting out of your car.