Answer Happy

Material Vacuum Air Bakelite Fused quartz Neoprene rubber Nylon Paper Polystyrene Pyrex glass Silicon oil Strontium titanate Teflon Water Dielectric constant & 1.00000 1.00059 4.9 3.78 6.7 3.4 3.7 2.56 5.6 2.5 233 2.1 80 Dielectric strength (V/m) 3x106 24 x 106 8x106 12 x 106 14 x 106 16 x 106 24 x 106 14 x 106 15 x 10° 8 x 106 60 x 106 Table 19.1 Dielectric Constants and Dielectric Strengths for Various Materials at 20°C
Using the same size of the plates and plates' separation (as in the Scenario), calculate the capacitance of a capacitor with a dialectric Polystyrene inserted between the plates (Refer to values in Table 19.1 Dielectric Constants and Dielectric Strengths for Various Materials at 20°C).
Peter's calculations should say that the plates will be about 20 meters square - huge! An example is shown in Figure 19.13a from your College Physics textbook. Select the Next button to go to the next screen.
And put the plates what, 5mm apart?