Aha, you have just asked one of the most wonderful and fundamental questions in the study of electromagnetism!
Electricity and magnetism interact with charged particles only. If the charge of a particle was zero, electricity and magnetism will have no effect on it.
The electric field “pushes” a charged particle in the direction of the field (like a car on a road)
A magnetic field “spins” a charged particle in circular motion (like a ball on a string)
You can then combine both to produce very interesting paths (like lines, circles, spirals, pendulum etc.)
I hope this makes some sense. Feel free to ask a follow-up question for more details 🙂
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