Positive Electricity: Uses, Differences, Repulsion

[Kienken333]

Can electricity be positive instead of negative? What differences would it be? Can electricity be used to repel things?

 

[Dr Lots-o'watts]

Q1. Yes.
Q2. The particle involved.
Q3. Yes.

Think about it and I (or someone else) will elaborate if needed.

 

[mathman]

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.