Question: Q. 11. A capacitor is connected to a battery. How much electrostatic energy is stored in the capacitor? If another capacitor of is connected in series with it with the same battery connected across the combination, find the charge stored and potential difference across each capacitor.
U [Delhi II 2017]
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Solution:
Ans. Calculation of electrostatic energy in capacitor
Total charge stored in combination
Potential difference across each capacitor
Energy stored, in the capacitor of capacitance 12 ,
Equivalént capacitance of and , in series, is given by
Charge stored across each capacitor
Charge on each capacitor as well as
Potential difference across capacitor
Potential difference across capacitor
[CBSE Marking Scheme 2017]