Table 2: Dielectric Constants and Strengths for Some Dielectric Materials Dielectric Constant I MH: Dielectric Strength (V/mil)" Material 60 H: Ceramics Titanate ceramics 15-10,000 5.4-8.7 50-300...

When an ac potential of 1000 V is applied at a frequency of 1 MHz, a parallel-plate capacitor with dimensions of 38 mm by 65 mm and a plate spacing of 1.3 mm must have a minimum capacitance of 70 pF. Which of the materials listed in Table 2 might be a good fit? Why?

Extracted text: Table 2: Dielectric Constants and Strengths for Some Dielectric Materials Dielectric Constant I MH: Dielectric Strength (V/mil)" Material 60 H: Ceramics Titanate ceramics 15-10,000 5.4-8.7 50-300 1000-2000 Mica Steatite (MgO-Sio,) Soda-lime glass Porcelain 5.5-7.5 200-350 6.9 6.0 6.9 6.0 250 40-400 Fused silica 4.0 3.8 250 Polymers Phenol-formaldehyde Nylon 6,6 Polystyrene Polyethylene Polytetrafluoroethylene 5.3 4.0 4.8 3.6 300-400 400 2.6 2.6 500-700 450-500 400-500 2.3 2.3 2.1 2.1 "One mil = 0.001 in. These values of dielectric strength are average ones, the magni- tude being dependent on specimen thickness and geometry, as well as the rate of application and duration of the applied electric field.