Capacitance Questions

When a capacitor of value 200 μF charged to 200V is discharged separately through resistance of 2 ohm and 8 ohm, then heat produced in joule will respectively be:

Three capacitors of value 6, 3 and 9 μF are joined according to the circuit and then the combination is connected with a battery of 10 volt. The potential difference across the third capacitor pl...

A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capaci...

A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :-

A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20V. If a dielectric material of dielectric constant K = 53 is inserted between the plates, the magnitude of the induce...

The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is :-

Two thin dielectric slabs of dielectric constants K2 and K2 (K1 2) are inserted between plates of a parallel plate capacitor, as shown in the figure. The variation of electric field E between the plat...

A parallel plate capacitor has a dielectric slab of dielectric constant K between its plates that covers 1/3 of the area of its plates, as shown in the figure. The total capacitance of the capacitor i...

A parallel plate capacitor is made of two circular plates separated by a distance 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 &#2...

In the circuit shown in the figure, there are two parallel plate capacitors each of the capacitance C.The switch S1 is pressed first to fully charge the capacitor C1 and then released. The switch S2 i...

A parallel plate capacitor having plates of area S and plate separation d, has capacitance C1 in air. When two dielectrics of different relative permittivity (ε1 = 2 and ε2 = 4) are introduc...

A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distancebetween the plates is d and area of each plate is A, the energy stored in the capacitor is...

The electric field at a distance from the centre of a charged conducting spherical shell of radius R is E. The electric field at a from the centre of the sphere is...

A parallel plate capacitor of capacitance C is connected to a battery and is charged to a potential difference V. Another capacitor of capacitance 2C is similarly charged to a potential difference 2V....

A parallel combination of 0.1 MΩ resistor and a 10μF capacitor is connected across 1.5 V source of negligible resistance. The time required of the capacitors to get charged upto 0.75 V is ap...

Two identical metal plates are given positive charge Q1 and Q2 ( 1) respectively. If they are now brought close together to from a parallel plates capictors with capacitance C, the potential differenc...

Two identical capacitors, have the same capacitance C. One of them is charged to potential V1 and the other to V2. Likely charged plates are then connected. Then, the decrease in energy of the combine...

fully charged capacitor has a capacitance ′C′ it is discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity ′s′ and...

A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively. If the capacitance between any two adjacent plates is C then the resultant capacitance is...

If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to