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Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance1 Mark
MCQ
The uniform field between the plates of a parallel plate capacitor is E volt/meter. If the distance between the plates is $d ( m )$ and the area of each plate is $A \left( m ^2\right)$, then the total energy stored in it is :
  • ✓
    $\frac{1}{2} \in_0 E ^2 A d$
  • B
    $\frac{ E ^2 A d}{\in_0}$
  • C
    $\frac{1}{2} \in_0 E^2$
  • D
    $\in_0 AE d$
✓

Answer

Correct option: A.
$\frac{1}{2} \in_0 E ^2 A d$
(a)$\frac{1}{2} \in_0 E ^2 A d$

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