Answer:
Explanation:
Electric energy per unit volume
= (1 / 2) x ε₀ E²
Total energy
= energy per unit volume x volume
= (1 / 2) x ε₀ E² x A d , A is plate area
= (1 / 2A) x (ε₀ (σ/ε₀)² x A² d) [ E is electric field ]
(1 / 2A) x (ε₀ (σA/ε₀)² X d)
(1 / 2A) x (ε₀ (Q/ε₀)² X d
= (1 / 2A) x (Q²/ε₀) x d
So total energy is proportional to d , distance between plates
if d is changed to d/2
total energy also becomes half.
(1 / 2A) x (Q²/ε₀) x d / 2
(1 / 4A) x (Q²/ε₀) x d
=
