A `20F` capacitor is charged to `5V` and isolated. It is then connected in parallel with an uncharged `30 F` capacitor. The decrease in the energy of the system will be

A 20F capacitor is charged to 5 V and isolated. It is then connected in parallel with an uncharged 30 F capacitor. The decrease in the energy of the system will be

A 20muF capacitor is charged to a potential of 20V and is then connected to an uncharged 10muF capacitor. Find out the common potential and the ratio of the energies stored in the two capacitors.

A 10 mu F capacitor is charged by a 30 V dc supply and then connected across an uncharged 50 mu F capacitor. Calculate The initial and final energies.

A 10 mu F capacitors is charged by a 30 V d.c supply and then connected across an uncharged 50 mu F capacitor. (ii) initial and final energies.

A parallel plate capacitor of capacitane C is charged to a potential V. It is then connected to another uncharged capacitor with the same capacitance. Find out the ratio of the energy stored in the combined system to that stored initially in the single capacitor.

A 5muF capacitor is fully charged by a 12V battery and then disconnected. If it is connected now parallel to an uncharged capacitor, the voltage across it is 3V. Then the capacitance of the uncharged capacitor is

A capacitor of capacitance C charged by an amount Q is connected in parallel with an uncharged capacitor of capacitance 2C. The final charges on the capacitors are