A sheet of aluminium foil of negligible thickness is introduced between the plates of a capacitor. The capacitance of the capacitor.
Text Solution
Verified by ExpertsThe correct answer is:
B
Aluminium is a metal, so when we insert an aluminium foil, equal and opposite charges appear on its two surfaces. Since it is of negligible thickness, it will not affect the capacitance. Alternative From the formula, C = 
⇒ Here, K = ∞ and t → 0
so, C = 
= C 0
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