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Short Note
Guess a possible reason why water has a much greater dielectric constant (= 80) than say, mica (= 6).
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Solution
Water has an unsymmetrical space as compared to mica. Since it has a permanent dipole moment, it has a greater dielectric constant than mica.
Concept: Electrical Potential Energy of a System of Two Point Charges and of Electric Dipole in an Electrostatic Field
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