Question

Choose which force is at work in each device. Each column contains exactly two answers. (4 points)
Magnetic force is use. Electric force is used.
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Answer 1

I can't see the devices — could you paste the list or an image? I need the specific device names to choose.

Meanwhile, here are quick rules and common examples to help you decide:
- Magnetic force: used when magnets or current-carrying coils produce forces (motors, generators, speakers, compasses, maglev). Magnetic forces act on moving charges or on other magnets and cause rotation/deflection.
- Electric force: used when stationary charged objects attract/repel or when electrostatic fields move charges (electrostatic precipitator, Van de Graaff generator, photocopier, static cling, electroscope). Electric forces act between charges along the field direction.

Example pairings (typical worksheet answers):
- Electric motor → Magnetic force
- Loudspeaker → Magnetic force
- Balloon sticking to wall (static cling) → Electric force
- Photocopier / electrostatic precipitator → Electric force

Send the four device names or an image and I’ll classify them exactly.