1.

The mean electric energy density between the plates of a charged capacitor is (here \[q\]= charge on the capacitor and \[A\]= area of the capacitor plate)   [MP PET 2002]

A.   \[\frac{{{q}^{2}}}{2{{\varepsilon }_{0}}{{A}^{2}}}\] 
B.   \[\frac{q}{2{{\varepsilon }_{0}}{{A}^{2}}}\]
C.   \[\frac{{{q}^{2}}}{2{{\varepsilon }_{0}}A}\]   
D.   None of the above
Answer» B.   \[\frac{q}{2{{\varepsilon }_{0}}{{A}^{2}}}\]


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