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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Definitions:

Limbic System

A complex system of nerves and networks in the brain, involved with instinct and mood. It controls the basic emotions and drives.

Neural Pathways

Networks of neurons that transmit signals between different parts of the brain and the nervous system.

Frequency Theory

Theory on how the inner ear registers the frequency of sound, stating that the perception of a sound’s frequency depends on how often the auditory nerve fires.

Basilar Membrane

A key structure in the cochlea of the inner ear which plays a critical role in the sense of hearing by vibrating in response to sound.