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

question 32

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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Definitions:

Nerves

Nerves are bundles of axons in the peripheral nervous system that transmit signals between the brain and the rest of the body.

Blood Vessels

Vessels within the body responsible for the flow of blood, encompassing veins, arteries, and capillaries.

Sphenoid Bone

A complex, butterfly-shaped bone at the base of the skull, key in forming the base of the cranial cavity and the sides of the skull.

Pituitary Gland

A small, pea-sized gland located at the base of the brain responsible for regulating critical body functions and hormones.