Energy Stored In Capacitor

Two condensers, one of capacity   and the other of capacity are connected to a   volt battery, as shown in the figure. 

The energy stored in the capacitors when both condensers are fully charged will be:
1.
2.
3.
4.

A series combination of n₁ capacitors, each of value C₁, is charged by a source of potential difference 4V. When another parallel combination of n₂ capacitors, each of value C₂, is charged by a source of potential difference V, it has the same (total) energy stored in it, as the first combination has. The value of C₂, in terms of C₁, is then:

1. $\frac{2C_1}{n_1{n}_2}$

2. $16\frac{n_2}{n_1}{C}_1$

3. $2\frac{n_2}{n_1}{C}_1$

4. $\frac{16C_1}{n_1{n}_2}$

A parallel plate condenser has a uniform electric field (V/m) in the space between the plates. If the distance between the plates is (m) and the area of each plate is (m²), the energy (joule) stored in the condenser is:
1.
2.
3.
4.

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 the resulting system:

1.	decreases by a factor of
2.	remains the same
3.	increases by a factor of
4.	increases by a factor of

A parallel plate capacitor has a uniform electric field in the space between the plates. If the distance between the plates is and the area of each plate is the energy stored in the capacitor is:

1.		2.
3.		4.

A capacitor of capacitance is charged fully by battery as shown in Figure Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance as shown in Figure The electrostatic energy stored by the system is:

1.
2.
3.
4.

If the plates of a parallel plate capacitor connected to a battery are moved closer to each other, then:

(A)	The charge stored in it increases.
(B)	The energy stored in it decreases.
(C)	Its capacitance increases.
(D)	The ratio of charge to its potential remains the same.
(E)	The product of charge and voltage increases.

Choose the most appropriate answer from the options given below:

1.	(A), (C) and (E) only
2.	(B), (D) and (E) only
3.	(A), (B) and (C) only
4.	(A), (B) and (E) only