Why don't we have just one type of charge? Why do we need two?
22838
Can a third type of electrical charge exist?
34913
Why does basic algebra provide one value for $x$ when there should be two?
77195
Is "one needs only" or "one need only" correct?
45667
What prevents the accumulation of charge in a black hole?
81496
How do electrons get a charge?
81067
Energy dissipated when two charged capacitors are connected in parallel
114003
Why is the work done on a charge calculated from infinity?
96993
Why do we have two of some organs, but not all?
93714
Why do we not have spin greater than 2?
10324
How is the "charge on a capacitor" defined when two plates are unequally charged?
3808
Why do same/opposite electric charges repel/attract each other, respectively?
91070
Charge inside conductor
84382
Sole minimal element: Why not also the minimum?
88047
What would happen if a charge could travel at $c$?
122132
Why do we test electric fields with positive charges and not negative ones?
150672
What's the purpose of two capacitors in parallel?
121022
Why are excess charges in a conductor at the surface?