Electrostatics Question 614
Question: Two identical capacitors, have the same capacitance C. One of them is charged to potential and the other to . 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 [IIT-JEE (Screening) 2002]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: C
Solution:
Initial energy of the system
When the capacitors are joined, common potential
Final energy of the system
Decrease in energy =