Wireless Charging: Power Through Electromagnetic Fields

Wireless charging works through electromagnetic induction.
A charging pad creates an oscillating magnetic field using a coil.
Your device has a matching coil that picks up the field.
The changing magnetic field induces an electric current in the device.
This current is converted into DC power to charge the battery.
The process is similar to how transformers transfer energy.
Alignment between coils affects charging speed and efficiency.
Standards like Qi ensure compatibility across many devices.
Wireless charging reduces cable wear but is usually slower than wired.
It’s a clean example of physics turning invisible fields into useful energy.