CapacitanceHard
Question
A parallel plate condenser of capacity C is connected to a battery and is charged to potential V. Another condenser of capacity 2C is connected to another battery and is charged to potential 2V. The charging batteries are removed and now the condensers are connected in such a way that the positive plate of one is connected to negative plate of another. The final energy of this system is -
Options
A.zero
B.
C.
D.
Solution
Total charge = 4 CV − CV = 3 CV
Now, let it is distributed as shown, potential across the capacitors is same
So,
⇒ q = 2 CV
Total potential energy =
Create a free account to view solution
View Solution FreeMore Capacitance Questions
The capacitance of a parallel plate condenser is C0. If a dielectric of relative permittivity er and thickness equal to ...Two similar condensers are connected in parallel and are charged to a potential V. Now these are separated out and are c...A capacitor is connected to 10 V battery. The charge on plates is 40μC. If medium between plates is air. The charge...For the given circuit, current i is :-...Three concentric metallic spherical shells of radii R, 2R, 3R, are given charges Q1, Q2, Q3, respectively. It is-found t...