An 800-KHz Radio Signal Is Detected at a Point 9

question 1

Multiple Choice

An 800-kHz radio signal is detected at a point 9.1 km distant from a transmitter tower.The electric field amplitude of the signal at that point is 0.440 V/m.Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed.What is the average total power radiated by the transmitter? (c = 3.00 × 10⁸ m/s, μ₀ = 4π × 10^-7 T ∙ m/A,ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A)0.27 MW
• B)0.32 MW
• C)0.38 MW
• D)0.45 MW
• E)0.50 MW

---

Definitions:

Liability

Legal responsibility for one's actions or omissions, often involving the obligation to compensate for harm caused.

Possession of Coat

Refers to the act of having physical control over a coat, implying ownership or temporary custody.

Commercial Aircraft

An airplane used for transporting passengers or cargo for profit.

Transfer of Possessions

The act of moving ownership or control of property or assets from one party to another.