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

question 22

Multiple Choice

Each plate of an ideal air-filled parallel-plate capacitor has an area of 0.0010 $m ^ { 2 }$ , and the separation of the plates is $0.050 \mathrm {~mm}$ An electric field of $7.4 \times 10^6 \mathrm {~V} / \mathrm { m }$ is present between the plates. What is the capacitance of this capacitor? (ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A) 180 pF
• B) 120 pF
• C) 300 pF
• D) 240 pF
• E) 360 pF

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Definitions:

Slow-Wave Sleep

A deep sleep stage characterized by low-frequency, high-amplitude brain waves, essential for physical restoration and memory consolidation.

Delta Waves

Slow brainwaves predominantly seen in deep sleep that are associated with healing, dreaming, and detached awareness.

NREM-3 (N3)

A stage of sleep that is deep and restorative, during which it is difficult to awaken someone; also known as slow-wave sleep.

Alpha Waves

Brainwaves detected by an EEG that are associated with a state of wakeful relaxation, typically present when a person's eyes are closed but they are awake.