What Is the Average Value of the Magnitude of the Poynting

question 19

Multiple Choice

What is the average value of the magnitude of the Poynting vector $\vec { S }$ at 1 meter from a 100-watt lightbulb radiating in all directions?

• A)1 W/m²
• B)4 W/m²
• C)2 W/m²
• D)8 W/m²
• E)12 W/m²

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