Is the Energy Density Formula Applicable to All Capacitors?

  • Thread starter Krushnaraj Pandya
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In summary, the expression for energy density in electric fields is ## \frac{1}{2} \epsilon_o E^2## and it is true for all capacitors, not just parallel plate capacitors. This is supported by all electrostatic related formulas.
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Krushnaraj Pandya
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Homework Statement


Is the expression Energy density= ## \frac{1}{2} \epsilon_o E^2## true for all capacitors or just parallel plate capacitor?

Homework Equations


all electrostatic related formulas

The Attempt at a Solution


Its just a simple question so...no attempts needed
 
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  • #2
Krushnaraj Pandya said:

Homework Statement


Is the expression Energy density= ## \frac{1}{2} \epsilon_o E^2## true for all capacitors or just parallel plate capacitor?

Homework Equations


all electrostatic related formulas

The Attempt at a Solution


Its just a simple question so...no attempts needed
Yes, it is true for electric fields, in general.
 
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ehild said:
Yes, it is true for electric fields, in general.
Alright, thank you very much.
 

1. What is a capacitor?

A capacitor is an electronic component that stores electrical energy in an electric field. It consists of two conductive plates separated by an insulating material, also known as a dielectric.

2. How does a capacitor work?

When a voltage is applied to a capacitor, it causes electrons to accumulate on one plate and leave the other plate with a positive charge. This creates an electric field between the plates, which stores energy. The capacitor discharges when the voltage is removed.

3. What are the different types of capacitors?

There are several types of capacitors, including ceramic, electrolytic, film, and variable capacitors. Each type has its own characteristics and is used for different purposes.

4. What is the unit of capacitance?

The unit of capacitance is farad (F). However, capacitors are usually measured in smaller units such as microfarads (μF) or picofarads (pF) due to their small size.

5. How do I choose the right capacitor for my circuit?

The right capacitor for a circuit depends on several factors such as the required capacitance, voltage rating, and frequency. It is important to carefully consider these factors and choose a capacitor that meets the specific needs of your circuit.

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