Electrostatistics Flashcards
Electrons have a what charge? (Pos, neg, no charge)
Negative charge
Protons have a what charge? (Pos, neg, no charge)
Positive charge
Neutrons have a what charge? (Pos, neg, no charge)
No charge
What is the unit for charge
(C) Coulomb
Two particles of the same charge will ____ each other
Repel
Two particles of different charges will _____ each other
Attract
To find the overall charge of an object we find the ____ (or total/overall change) from the number of positive and negative charges
Net charge
Atoms bond by sharing ____
Electrons
For most materials the number of electrons and protons is equal. So the total charge of the material is _____.
Neutral
______ - Materials that allow charges to flow freely (Ex: silver, gold, steel, copper, seawater)
Conductors
_____ - Materials that restrict the flow of charge (Ex: Rubber, glass, oil, diamond, dry wood)
Insulators
_____ - When two Materials rub against each other, electrons can be rubbed off of their atoms (Ex: rubbing a balloon on a sweater, shoes across a carpet)
Friction
_____ - When a Charged body touches a neutral one or another charged body, transferring charge by direct contact (2 objects)
Conduction
When two conductors touch, their electrons move _____
Freely
Charges always want to go where they can _____ ____ the most
Spread out
_____ - When a neutral Body is charged by bringing a charged object close to said object but not in direct contact (many objects, NOT TOUCHING, caused polarization)
Induction
_____ - The Process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size or conductivity (Ex: touching a doorknob)
Grounding
EPE increases as the charge _____
Increases
Charges in an electric field have an ______
Electric potential energy
It takes _____ to move like chargers together or opposite chargers apart (stored at EPE)
Work
When like charges repel, EPE is converted to __
KE
Is higher PE less stable or More stable?
Less stable
If two charges behave in the expected manor the EPE ____
Decreases
_______ (V) - The Electric Potential Energy per unit charge (V = W/q)
Electric Potential
Potential, Potential Difference, Voltage =
Electric potential
______ - Describes the pulling or pushing force in a space between charges. Helps understand how electricity begins and continues to flow
Electric Fields (E-fields)
Electrostatic force is ______ proportional to charge
Directly
Electrostatic force is _____ proportional to distance
Inverse square
