When capacitors are connected in series, the total capacitance is less than any one of the series capacitors' individual capacitances. If two or more capacitors are connected in series, the overall effect is that of a single (equivalent) capacitor having the sum total of the plate spacings of the individual capacitors.

Does capacitance reduce in series?

When capacitors are connected one after another, they are said to be in series. Therefore, the total capacitance will be lower than the capacitance of any single capacitor in the circuit. . Created by David SantoPietro. ...

What decreases the capacitance?

The capacitance is inversely proportional to the distance between the plates. Hence, the capacitance of a capacitor decreases when the plates are farther apart.