Air breaks down and conducts charge as a spark if the electric field magnitude exceeds 3.00 x 106 V/m. HINT (a) Determine the maximum charge Q area of 1.60 x 104 m2. E c (b) A 71.0 pF air-filled parallel-plate capacitor stores charge Q :lv max (in C) that can be stored on an air-lled parallel-plate capacitor with a plate max. Find the potential difference across its plates (in V). Need W @@