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

question 23

Multiple Choice

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m²,and the separation of the plates is 0.020 mm.An electric field of 3.9 × 10⁶ V/m is present between the plates.What is the surface charge density on the plates? (ε₀ = 8.85 × 10^-12 C²/N • m²)

• A) 35 µC/m²
• B) 73 µC/m²
• C) 17 µC/m²
• D) 52 µC/m²
• E) 87 µC/m²

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