32. Electromagnetic Waves
Intensity of EM Waves
4:18 minutes
Problem 62a
Textbook Question
Textbook QuestionHow practical is solar power for various devices? Assume that on a sunny day, sunlight has an intensity of 1000 W/m² at the surface of Earth and that a solar-cell panel can convert 20% of that sunlight into electric power. Calculate the area A of solar panel needed to power (a) a calculator that consumes 50 mW (b) a hair dryer that consumes 1875 W,
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