Capacitor

The energy of a charged capacitor is U. Another identical capacitor is connected parallel to the first capacitor, after disconnecting the battery. The total energy of the system of these capacitors will be

A battery of 10V is connected to a capacitor of capacity 0. lF . The battery is now removed and this capacitor is connected to a second uncharged capacitor. If the charges are distributed equally on these two capacitors, find the total energy stored in the two capacitors. Find the ratio of final energy to initial energy stored in capacitors.

A capacitor of capacitance 5muF is charged to potential 20V and isolated. Now, an uncharged capacitor is connected in parallel to it. If the charge distributes equally on these capacitors, find total energy stored in capacitors.

Two capacitors of capacitance 2 muF and 3 muF are joined in series. Outer plate first capacitor is at 1000 volt and outer plate of second capacitor is earthed (grounded). Now the potential on inner plate of each capacitor will be

A charge Q is imparted to two identical capacitors in paralle. Separation of the plates in each capacitor is d_0 . Suddenly, the first plate of the first capacitor and the second plate of the second capacitor start moving to the left with speed v, then

An air capacitor consists of two parallel plates B as shown in the figure. Plate A is given a change and plate B is given a charge 3Q. P is the median plane of the capacitor. If C_(0) is the capacitor capacitor, then

A capacitor is charged by a cell of emf E the charging battery is then removed. If an identical capacitor is now inserted in the circuit in parallel with the previous capacitor, the potential difference across the new capacitor is

A 900 pF capacitor is charged by 100V battery. (a) How much electrostatic energy is strored by the capacitor ? The capacitor is disconnected from the battery and connected to another 900 pF capacitor. How much is the electrostatic energy stored in the system ?

Effective capacitance of parallel combination of two capacitors C_(1) and C_(2) is 10muF . When the capacitors are individually connected to a voltage source of 1V, the energy stored in the capacitor C_(2) is 4 times of C_(1) . If these capacitors are connected in series, their effective capacitor will be: lt

A capacitor is connected across an inductor. At time t = 0 charge on the capacitor is equal to 1/sqrt2q_"max" , where q_"max" is the maximum charge on the capacitor. The time t, at which the energy stored in the capacitor is equal to the energy stored in the inductor is (The inductance of the inductor is L and capacitance of the capacitor is C. Resistance of the circuit is zero)