1. The average distance an electron travels between collisions is 2.0 μm. Find what acceleration must an electron have to gain 2.0 x 10-18 of kinetic energy in this distance?
2. Find what force must act on an electron to give it the acceleration found in part a?
3. Find what strength electric field will exert this much force on an electron? This is the breakdown field strength.
4. Assume a free electron in air is 1.0 centimeter away from a point charge. Find what minimum charge qmin must this point charge have to cause a breakdown of the air and create a spark?