Can Radio Waves Produce Electricity in a Large Coil of Wire?

AI Thread Summary
A large coil of wire can indeed have a current induced in it by radio waves. The amount of current generated is likely to be very small, potentially less than a nano-amp. This principle is similar to the operation of crystal radios, which do not require a battery when equipped with a sufficiently large antenna. The efficiency of energy conversion from radio waves to electrical current in such a setup is minimal. Overall, while it's possible to generate electricity from radio waves in a large coil, the output is negligible.
daniel_i_l
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Let's say that you make a huge (radius of a few meters) coil of wire. Will radio waves cause a current to run through it? If so then how much?
Thanks.
 
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Yes current will be induced in the coil, probably less then a nano-amp.
 
This is how old crystal radios work. You don't need a battery to run them if the antenna is big enough.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

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