In a parallel plate capacitor, the distance between the

Home » Electrostatics » Electrostatic Potential and Capacitance » Question

In a parallel plate capacitor, the distance between the plates is d and potential difference across the plates is V. Energy stored per unit volume between the plates of capacitor is

1. Q²
  2V²
2. 1 ε₀ V²
  2 d²
3. 1 V²
  2 ε₀d²
4. 1 ε₀ V²
  2 d

Correct Option: B

Energy stored per unit volume

=

1

ε₀E² =

1

ε₀

V

²

=

1

ε₀

V²

∵ E =

V

2

2

d

2

d²

d