# Calulate the energy stored in capacitor

• noname1
In summary, a capacitor is an electronic component that stores and releases electrical energy in the form of an electric charge. The energy is stored in a capacitor through the accumulation of positive and negative charges on two conductive plates separated by a dielectric. The formula for calculating the energy stored in a capacitor is E = 1/2 * C * V^2, where E is energy in joules, C is capacitance in farads, and V is voltage in volts. The energy stored in a capacitor is directly proportional to its capacitance, and factors such as voltage and dielectric material can also affect it.
noname1
a potential difference V = 100 V is applied across a capacitor arrangement with capacitances C1 = 12.0 µF, C2 = 6.00 µF, and C3 = 16.0 µF. Find the following values.

i calculated cnet and got 847e-6f
voltages across c1 and c2 i got 47.1

now i have to calulate the energy stored in capacitor 1

u = .5 x c x v^2
u = .5 x 12e-6 x 47.1^2 = 0.013J

but i am getting the answer is wrong can anyone confirm?

#### Attachments

• hrw7_25-28.gif
1.5 KB · Views: 459
Last edited:

How did you get cnet? C1 and C2 are in parallel, and effective capacitance of 1 and 2 is in series with C3.

## What is a capacitor?

A capacitor is an electronic component that stores and releases electrical energy in the form of an electric charge. It is made of two conductive plates separated by an insulating material, known as a dielectric.

## How is the energy stored in a capacitor?

The energy is stored in a capacitor in the form of an electric field between the two plates. When a voltage is applied, one plate accumulates positive charge while the other accumulates negative charge, creating the electric field.

## What is the formula for calculating the energy stored in a capacitor?

The formula for calculating the energy stored in a capacitor is E = 1/2 * C * V^2, where E is energy in joules, C is capacitance in farads, and V is voltage in volts.

## How does the capacitance affect the energy stored in a capacitor?

The higher the capacitance, the more charge can be stored on the plates, resulting in a higher amount of energy stored in the capacitor. Therefore, the energy stored in a capacitor is directly proportional to its capacitance.

## What factors can affect the energy stored in a capacitor?

The energy stored in a capacitor can be affected by the capacitance, voltage, and dielectric material. The type of dielectric used can also impact the amount of energy that can be stored in a capacitor.

Replies
1
Views
3K
Replies
4
Views
2K
Replies
2
Views
12K
Replies
9
Views
2K
Replies
4
Views
2K
Replies
9
Views
2K
Replies
4
Views
12K
Replies
10
Views
2K
Replies
5
Views
1K
Replies
11
Views
3K