Air will break down (lose its insulating quality) and sparking will result if the field strength is increased to about 3 × 106 n/c. what acceleration will an electron experience in such a field? the mass of the electron is 9.109 × 10−31 kg and the fundamental charge is 1.602 × 10−19 c. let the electric field lie along the positive x-axis. answer in units of m/s 2