CapacitanceHard

Question

Two similar condensers are connected in parallel and are charged to a potential V. Now these are separated out and are connected in series as shown. Then 
                                                          

Options

A.the energy stored in the system increases
B.the potential difference between free plates may becomes zero.
C.the potential difference between free plates may becomes 2V.
D.the charge on the plates mutually connected nullifies.

Solution

the potential difference between free plates may becomes 2V.
                    
When terminal B is connected with terminal C
         VA − VD  = 2V
When terminal B is connected with terminal D
         VA − VC  = 0
The energy stored in the system remains same.

Create a free account to view solution

View Solution Free
Topic: Capacitance·Practice all Capacitance questions

More Capacitance Questions

N identical capacitor are joined in parallel and the combination is charged to a potential V. Now if they are separated ...If the temperatures on both ends of a conductor are different then the emf between them is called :...A glass slab is put with in the plates of a charged parallel plate condenser. Which of the following quantities does not...The smallest temperature difference that can be measured with a combination of a thermocouple of thermo e.m.f 30 μV...The distance between plates of a parallel plate capacitor is ′d′. Another thick metal plate of thickness d/2...