Question: A capacitor has parallel plates of area 12 cm' separated by 2.0 mm. The space between the plates is filled with polystyrene (see Table 24.2).

A capacitor has parallel plates of area 12 cm' separated by 2.0 mm. The space between the plates is filled with polystyrene (see Table 24.2).
(a) Find the permittivity of polystyrene.
(b) Find the maximum permissible voltage across the capacitor to avoid dielectric breakdown.
(c) When the voltage equals the value found in part (b), find the surface charge density on each plate and the induced surface-charge density on the surface of the dielectric.

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