Energy Density: Each Plate of an Air-Filled Parallel-Plate Air Capacitor

question 45

Multiple Choice

Energy density: 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

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Definitions:

Perceptual Distraction

A phenomenon where the focus of attention is diverted due to irrelevant stimuli in the environment, affecting cognitive processes.

Self-serving Bias

The common tendency to credit ourselves for our successes (attributing them to internal factors) while attributing our failures to external factors.

Stereotyping Bias

The preconceived and oversimplified beliefs or ideas about particular groups of people, which can influence judgments and decisions unconsciously.

Self-concept

An individual's perception of themselves, shaped by their experiences, beliefs, and attributes.