Answer :

Concepts/Formulas used:

Kirchhoff’s loop rule:

The sum of potential differences around a closed loop is zero.


If two conductors have a potential difference V between the them and have charges Q and -Q respectively on them, then their capacitance is defined as

Note that


By conservation of charge,


Now, applying Kirchhoff’s loop rule, we get

Using (1), we get

where A is a constant.


Substituting , we get B = -Q


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