Home
Class 12
PHYSICS
In the circuit what is the change of to...

In the circuit what is the change of total electrical energy stored in the capacitors when the key is pressed ?

A

`(CV^2)/(12)`

B

`(7CV^2)/(8)`

C

`(5CV^2)/(4)`

D

`(3CV^2)/(8)`

Text Solution

Verified by Experts

The correct Answer is:
C
c. Initially, all three capacitors are in parallel
`E_i = 1/2 xx 3CV^2 = 3/2 CV^2`
When key is closed, two capacitors are in series.
`E_f = 1/2 C (V/2)^2 xx 2 = (CV^2)/4`
`Delta E = E_i - E_f = 5/4 CV^2` .
Promotional Banner

Similar Questions

Explore conceptually related problems

The total electrostatic energy stored in both the capacitor is

The energy stored in the capacitor in the steady state is

The energy stored in 4 muF capacitors is

The total electrostatic energy stored in both the capacitors ("in "muJ) is

Find the total energy stored in the capacitors in the given network.

Find total energy stored in capacitors given in the circuit

The energy stored in 5uF and 8uF capacitors are

In the circuit shown , what is the energy stored in the coil at steady state?

In the circuit shown , what is the energy stored in the coil at steady state?

Find the charge and energy stored on the capacitor C in the following circuit.