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

In summary, electricity can be generated from radio waves through electromagnetic induction, and is used in devices such as radios, cell phones, and wireless chargers. While it is not considered a renewable source of energy, it is more sustainable and environmentally friendly than traditional sources. The advantages include wireless transmission and no greenhouse gas emissions, though there may be potential health risks associated with exposure to radio waves.
  • #1
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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  • #2
Yes current will be induced in the coil, probably less then a nano-amp.
 
  • #3
This is how old crystal radios work. You don't need a battery to run them if the antenna is big enough.
 

1. How is electricity generated from radio waves?

Electricity can be generated from radio waves through a process called electromagnetic induction. When a conductor, such as a wire, is placed in a changing magnetic field, an electric current is induced in the conductor, resulting in the generation of electricity.

2. What types of devices use electricity from radio waves?

Devices that use electricity from radio waves include radios, cell phones, televisions, and wireless chargers. These devices use radio waves to receive and transmit information, which is then converted into electricity to power the device.

3. Is electricity from radio waves a renewable source of energy?

No, electricity from radio waves is not considered a renewable source of energy because it relies on the use of non-renewable resources, such as fossil fuels, to generate the radio waves. However, it is a more sustainable and environmentally friendly option compared to traditional energy sources.

4. What are the advantages of using electricity from radio waves?

One of the main advantages of using electricity from radio waves is that it can be transmitted wirelessly, making it a convenient and versatile source of energy. Additionally, it produces no greenhouse gas emissions, making it a cleaner option for powering devices.

5. Are there any potential risks associated with electricity from radio waves?

While there is ongoing research on the potential health effects of exposure to radio waves, the current scientific consensus is that the levels of exposure from everyday devices are not harmful to humans. However, it is important to follow safety guidelines and limit exposure to radio waves when possible.

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