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## Homework Statement

Three capacitors are connected in series across a

DC power source that produces a constant potential

difference. A fourth capacitor is now added in series with

the other three. As a result of adding this capacitor, the

total energy stored in the system of capacitors has? (decreased, increase, no change)

How would this change if the capacitor was added in parallel?

## Homework Equations

C=Q/V E=1/2qV E=1/2q^2/C

## The Attempt at a Solution

So adding a capacitor has decreased the capacitance. I think the potential difference increase and the charge decrease the same amount? not sure

If it were in parallel the voltage would have to be the same but the charge could be different. The capacitance would increase. I'm unsure of how to go about this?

can someone explain what would happen how we know the energy?

the answer is decrease and increase respectively.