Two similar parallel plate capacitors each of capaciti `C_0` are connected in series The combination is connected with a voltage source of `V_0`. Now, seperation between the plates of one capacitor is increased by a distance `d` and the separation between the plates of another capacitor is decreased by the distance `d/2`. The distance between the plates of each capacitor was `d` before the chane in sepration. Then select the correct choice.

Options

A. the new capacity of the system will increase
B. the new capacity of the system will decrease
C. the new capacity of the system will remain same
D. data insufficient

Answer

B

Explanation

Initially
`C_(n et)=((C_0)(C_0))/(C_0+C_0)=C_0/2`
`=0.5C_0`
Finally
`C_(n et)=((C_0/2)(2C_0))/((C_0/2)+2C_0)`
`=0.4C_0`