Each plate of an air-filled parallel-plate air capacitor has an area of 0.0040 m²,and the separation of the plates is 0.080 mm.An electric field of 5.3 × 10⁶ V/m is present between the plates.What is the energy density between the plates? (ε₀ = 8.85 × 10^-12 C²/N • m²) A) 124 J/m³ B) 84 J/m³ C) 170 J/m³ D) 210 J/m³ E) 250 J/m³

Question

Quizplus · Accepted Answer

The energy density (u) in an electric field is given by the formula u = 0.5 * ε₀ * E². Substituting the given values, u = 0.5 * 8.85 × 10^-12 C²/N•m² * (5.3 × 10⁶ V/m)² = 124 J/m³.

Each Plate of an Air-Filled Parallel-Plate Air Capacitor Has an Area