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 Qmax (in C) that can be stored on an air-filled parallel-plate capacitor with a plate area of 1.95 x 10-4 m. 6.5e-8 X (b) A 44.0 F air-filled parallel-plate capacitor stores charge Qmax. Find the potential difference across its plates (in V). 1.47e-3 x v