Energy stored in electric field

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SUMMARY

The discussion centers on the calculation of energy stored in an electric field, specifically using the formula for energy density, expressed as 1/2 ε E². The participants explore the integration of this energy density over space to derive the potential energy in a system of two point charges, Q1 and Q2, separated by a distance 'd'. A correction is made regarding the interpretation of the result, clarifying that the integration yields the interacting potential energy rather than a force.

PREREQUISITES
  • Understanding of electric fields and energy density
  • Familiarity with the concept of potential energy in electrostatics
  • Knowledge of integration techniques in physics
  • Basic principles of electrostatics, including Coulomb's law
NEXT STEPS
  • Study the derivation of energy density in electric fields using Maxwell's equations
  • Learn about the concept of electric potential energy in multi-charge systems
  • Explore advanced integration techniques for calculating energy in continuous charge distributions
  • Investigate the relationship between electric fields and forces in electrostatics
USEFUL FOR

Students and professionals in physics, electrical engineering, and anyone interested in understanding the principles of electrostatics and energy calculations in electric fields.

person_random_normal
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I know that energy stored in electric field / unit volume = 1/2 ε E2

so can I say that for any configuration calculating ∫ ½ ε E2 over whole space - gives me the potential energy stored stored in the system

for instance
for →
Q1 °

° Q2 ...separated by distance 'd'

∫ ½ ε E2 over whole space = KQ1Q2 / d
 
Last edited:
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Please check your final equation. You integrated energy density over space and got a force!
 
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Chandra Prayaga said:
Please check your final equation. You integrated energy density over space and got a force!

Oh ! I meant interacting potential energy

have corrected that !
 
?
 
Say something
 
If you still have questions, you should ask them, instead of barking orders at us.
 
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Vanadium 50 said:
If you still have questions, you should ask them, instead of barking orders at us.

i have my question at the top !

nobody solved it so , i could have counter question
 
by the way sorry if was curt any way
:woot::wink:
 

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