system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] How does Wireless Charging work?
gpt
A long length of fine wire is wound into a coil, basically in the shape of a doughnut or garden hose.  When electricity (specifically, alternating current or AC)  is run through this coil, it sets up a magnetic field around it.  If you then bring another similar coil of wire close (but not touching) to this coil, the magnetic field from the first *induces* an electrical current in the second. This is then connected to the battery so that it can be charged.   So, the charger will have the first coil , and your device the second.  

Edit: Added AC reference.