In this case we replace a network of capacitor by a single hypothetical capactior,which is Known as equivalent capacitor.
properties of equivalent capacitor
The charge store by equivalent capacitor will be same as that of charge stored by whole network.
equivalent capacitor Should store same amount of energy as that of stored by whole network.
Types of combination
It can be of infinite type.Symmetrically it can be classified into two types.
(i) Parallel Combination
(ii) Series Combination