Electric Forces & Fields Flashcards
1
Q
Electromagnetic force
A
Force that holds nucleus & electrons together
2
Q
Electric Charge
A
A quality of electrons & protons that give them an attractive force
2 varieties: positive & negative
3
Q
Principle of superposition
A
When 2 or more waves of same type meet at a point
4
Q
Electric field
A
Produced by charges & point away from positive charges & toward negative
5
Q
Electric dipole
A
Pair of 2 equal but opposite charges
6
Q
Conductor
A
Materials that permit flow of excess of charge; conduct electricity
7
Q
Insulators
A
Materials that closely guard their electrons, not free to roam throughout atomic lattice
8
Q
Semiconductor
A
Midway between conductor & insulator
9
Q
Superconductor
A
Materials with no resistance to flow of charge; perfect conductor of electric charge
