To determine whether magnetic force or electric force is at work in a device, you need to consider the function of the device. Here are some common examples:
- Electric Motor: Magnetic force is used.
- Electric Generator: Magnetic force is used.
- Battery: Electric force is used.
- Capacitor: Electric force is used.
- Magnet Levitation: Magnetic force is used.
- Transformer: Magnetic force is used.
If you have specific devices that you want to categorize, please list them, and I can assist you further!