The maximum electric field E at 1 meter from a 100W light bulb can be calculated using the intensity equation I=(1/2)(8.85x10^-12)(c)E^2. The intensity I is determined by the power output divided by the surface area of a sphere with a radius of 1 meter, which is 4π(1^2) m². Therefore, the correct approach involves calculating the intensity first and then solving for E, ensuring that the area is accounted for in the calculations.
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sgoeke said:Homework Statement
What is the maximum value of the electric field E at 1.0 m from a 100 W light bulb radiating in all directions?
Homework Equations
I feel like I should use this equation: I=(1/2)(8.85x10^-12)(c)E^2
The Attempt at a Solution
When I used that equation, I didn't get the right answer. But I guess I'm confused since intensity is W/m^2 and we're not given the unit area.