Explain why the electric and magnetic field strengths of an electromagnetic wave (produced by an antenna connected to an ac generator) vary sinusoidally.
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![Explain why the electric and magnetic field strengths of an electromagnetic wave (produced by
an antenna connected to an ac generator) vary sinusoidally.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2b632062-7ccc-4dd3-a093-b9e3993697da%2F59fd56fa-5ea9-47a0-ad39-19891cf9760a%2Ffhscwi7_processed.jpeg&w=3840&q=75)
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