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Capacitance of Parallel Plate Capacitor

A parallel pl...

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A parallel plate capacitor of capacity C has been charged so that the potential difference between its plates is V. Now the plates of this capacitor are connected to another uncharged capacitor of capacity 2C, the loss of energy in system is

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Q. A capacitor of capacity

C

is charged to a potential difference

V

and another capacitor of capacity

2 C

is charged to a potential difference

4 V .

The charging batteries are disconnected and the two capacitors are connected with reverse polarity (i.e., positive plate of first capacitor is connected to negative plate of second capacitor). The heat produced during the redistribution of charge between the capacitors will be :

Q. A capacitor of capacity

C

is charged to a potential difference

V

and another capacitor of capacity

2 C

is charged to a potential difference

2 V .

The charging batteries are disconnected and the two capacitors are connected to each other in parallel with reverse polarity. The energy lost in this process will be:

Q. The plates of a parallel plate capacitor are given charges

+ 4 Q

- 2 Q

. The capacitor is then connected across an uncharged capacitor of same capacitance as first one

(= C)

. Find the final potential difference between the plates of the first capacitor.

Q. A parallel plate air capacitor has capacity

^{'} C^{'}

, distance of separation between plate is

^{'} d^{'}

and potential difference

^{'} V^{'}

is applied between the plates. Force of attraction between the plates of the parallel plate air capacitor is:

μ

capacitors is charged to

200

volt and then the battery is disconnected. When it is connected in parallel to another uncharged capacitor, the potential difference between the plates of both is

40

volt. The capacitance of the other capacitors is:-

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