Positive Electricity: Uses, Differences, Repulsion

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Electricity can be described as positive or negative, a distinction that originated from historical terminology rather than scientific necessity. The charge of electrons is conventionally referred to as negative, but this could have easily been reversed. Positive electricity exists and can be utilized in various applications, including repelling objects. The particle responsible for this charge is crucial in understanding its behavior and interactions. Overall, the terminology surrounding electricity does not affect its practical uses or fundamental principles.
Kienken333
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Can electricity be positive instead of negative? What differences would it be? Can electricity be used to repel things?
 
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Q1. Yes.
Q2. The particle involved.
Q3. Yes.

Think about it and I (or someone else) will elaborate if needed.
 
For question 1, positive or negative as a term for electricity is a historical accident. Either term could have been used to denote the charge of electrons. It was called negative before people understood the physics behind electric current.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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