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You had three separate questions there, I'll try to clarify some concepts: How can a time - varying magnetic field induce current in vertical strips Faraday's law of induction tells us how much there is electromotive force (a kind of sum of voltages that must be dissipated in the loop) along a conductive loop when a magnetic field passing through that loop ...


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The number of cars is not an issue. Driving in a city with thousands of cars in your vicinity still allows FM reception. Engines are running, which is probably not the case when watching a film in a drive-in cinema. For good stereo reception (26 dB audio signal to noise) you need a field strength of 100 ┬ÁV/m or more. In a Rayleigh path with reflections you ...


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In my experience, RF noise from vehicles comes from engine ignition systems (distributors, ignition coils, spark plugs, and spark plug cables) of gasoline-fueled vehicles, but ignition systems in cars made over the last 30 years or so are much better shielded than older cars' ignition systems. Diesel-fueled vehicles don't have ignition systems at all. The ...


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