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+2 votes
23.2k views
in Electrostatics by (150k points)
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A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor
(a) decreases
(b) remains unchanged
(c) becomes infinite
(d) increases.

1 Answer

+1 vote
by (87.2k points)
selected by
 
Best answer

(b)  Aluminium is a good conductor. Its sheet introduced between the plates of a capacitor is of negligible thickness. The capacity remains unchanged.

With air as  dielectric, C = (ε0A)/d

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