A Microwave Oven Operates with Sinusoidal Microwaves at a Frequency

question 19

Multiple Choice

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:

Wilcoxon Rank Sum Test

A non-parametric statistical test used to compare two independent samples, determining whether their populations have identical distribution characteristics.

Level Of Significance

The probability of rejecting the null hypothesis in a statistical test when it is actually true.

SAT Scores

Standardized test scores used for college admissions in the United States, typically ranging from 400 to 1600.

Schools

Educational institutions that provide learning environments for students under the guidance of teachers.