3. A capacitor consists of two large metal disks of radius 2.5 meters placed parallel to…

3. A capacitor consists of two large metal disks of radius 2.5 meters placed parallel to each other, a distance of 1.2 millimeters apart. The capacitor is charged up to have an increasing amount of charge +Q on one disk and on the other. At about what value of Qdoes a spark appear between the disks?