Field Intensity: a Microwave Oven Operates with Sinusoidal Microwaves at a Frequency

question 36

Multiple Choice

Field intensity: A microwave oven operates with sinusoidal microwaves at a frequency of 2400 MHz. The height of the oven cavity is 25 cm and the base measures 30 cm by 30 cm. Assume that microwave energy is generated uniformly on the upper surface of the cavity and propagates directly downward toward the base. The base is lined with a material that completely absorbs microwave energy. The total microwave energy content of the cavity is 0.50 µJ. What is the amplitude of the electric field? (c = 3.00 × 10⁸ m/s, μ₀ = 4π × 10^-7 T ∙ m/A, ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A) 1600 V/m
• B) 1900 V/m
• C) 2200 V/m
• D) 2500 V/m
• E) 2800 V/m

---

Definitions:

Psychological Abnormality

A deviation from what is considered a normal range in mental state or behavior by societal standards, often indicating a potential mental disorder or illness.

Subculture of Violence Theory

A theory suggesting that violence is a learned form of behavior that is more prominent within certain groups or subcultures in society.

Interpersonal Problems

Issues arising from interactions between individuals that can lead to conflicts or disagreements.

Juvenile Killings

Homicidal acts committed by individuals who are legally considered minors.