Energy Density and Electric Field: Difference between revisions
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This section takes an alternative view and treats electric fields as if they have energy stored in them. To learn how this works, consider moving one plate of a capacitor. For a very small gap, the force of one capacitor plate on another capacitor plate is charge Q times the field made by the other plate: | This section takes an alternative view and treats electric fields as if they have energy stored in them. To learn how this works, consider moving one plate of a capacitor. For a very small gap, the force of one capacitor plate on another capacitor plate is charge Q times the field made by the other plate: | ||
<math>E_{one plate}=\frac{Q/A}{2\epsilon_0 } | <math>E_{one plate}=\frac{Q/A}{2\epsilon_0 } </math> | ||
Then the force on one plate is: | |||
<math>F=Q\frac{Q/A}{2\epsilon_0} | <math>F=Q\frac{Q/A}{2\epsilon_0} </math> | ||
Revision as of 18:21, 30 November 2015
claimed by Samir Nileshwar
Main Idea
This section takes an alternative view and treats electric fields as if they have energy stored in them. To learn how this works, consider moving one plate of a capacitor. For a very small gap, the force of one capacitor plate on another capacitor plate is charge Q times the field made by the other plate:
[math]\displaystyle{ E_{one plate}=\frac{Q/A}{2\epsilon_0 } }[/math]
Then the force on one plate is:
[math]\displaystyle{ F=Q\frac{Q/A}{2\epsilon_0} }[/math]