Electromagnetic Waves Are Radiated Uniformly in All Directions from a Source

question 46

Multiple Choice

Electromagnetic waves are radiated uniformly in all directions from a source. The rms electric field of the waves is measured 35 km from the source to have an rms value of 0.012 N/C. Determine the average total power radiated by the source.

• A)5.9 × 10³ W
• B)9.0 × 10³ W
• C)2.4 × 10⁴ W
• D)6.3 × 10⁴ W
• E)1.6 × 10⁵ W

---

Definitions:

Sensitive

The quality of being able to detect or respond to slight changes, signals, or influences.

Separate Receptors

Describes the presence of distinct cellular components or structures that respond to different stimuli or substances.

Retina

The light-sensitive layer of tissue at the back of the inner eye, which converts light images into neural signals sent to the brain.

Occipital Lobe

The region of the brain located at the back of the head, responsible for processing visual information.