Lag1989 problem number 14.26

Lag1989 problem number 14.26

A capacitor with a capacity of C₁ = 100 pF is charged to a potential difference U = 100V. After disconnecting the battery, the capacitor is connected in parallel with the other. Find the capacity of the second capacitor C₂, if the final voltage U₁ = 30 V. What amount of energy W is lost in this case and what happened to it?

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