Capacitors — Easy JEE physics MCQ
**[JEE Mains 2026]** Two capacitors C and 2C are charged to potentials V and 2V respectively. They are then connected in parallel with opposite polarity. What is the common potential?
- A. V
- B. 2V
- C. V/3
- D. 4V/3
Solution
Total charge = 2C × 2V - C × V = 4CV - CV = 3CV.
Total capacitance = C + 2C = 3C.
Common potential = 3CV / 3C = V.