Questions
A capacitor is charged to store an energy U. The charging battery is disconnected. An identical capacitor is now connected to the first capacitor in parallel. The energy in each of the capacitor is
detailed solution
Correct option is A
Initial energy E1 is given byE1=12CV2=UThe total final energy E2 is given byE2=12(C+C)CVC+C2=14CV2or E2=U2This energy is shared by both capacitors. Therefore, the energy of each capacitor is U/4.Talk to our academic expert!
Similar Questions
Two identical capacitors, have the same capacitance C. One of them is charged to potential V1 and the other to V2. The negative ends of the capacitors are connected together. When the positive ends are also connected, the decrease in energy of the combined system is
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