Question

A metal foil of negligible thickness is introduced between two plates of a capacitor at the centre. The capacitance of capacitor will be
1) double
2)same3)half4)k times

Answer 1

Explanation:

if a metal foil is introduced, the system can b treated a 2 capacitors in series where distance between the plates is half the original value but area shall remain same if area of foil is same as the metal plates of capacitor. so capacitance shall be one-fourth of the original value,. isn't it?

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Answer 2

Answer:

the capacitance of the capacitor will remain the same.

Explanation:

As aluminium is a metal and its thickness is negligible, the potential difference between the plates remains unchanged. Thus the capacitance will remain unchanged.

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