Fundamentals
Like charges (++ or --) do this.
What is repel?
Charging by this occurs with the physical transfer of charge through contact.
What is conduction?
The region around any charged object where another charge would experience a force.
What is an electric field?
This LAW describes the relationship between the force charged experienced at a given distance from each other.
What is Coulomb’s law?
The page number of the Electricity Equations
What is page 4?
The subatomic particle that normally moves between objects when charging occurs.
What is an electron?
Charging by rubbing two objects together (a subcategory of conduction)
What is friction?
The imaginary lines that show electric field direction and relative strength (density).
What are electric field lines?
The equation given by Coulomb's law.
What is F_e=k\frac{q_1q_2}{r^2} ?
8.99*10^9 \ \frac{N m^2}{C^2}
What is the electrostatic constant k?
The rule stating that the total charge in a closed, isolated system remains constant.
What is (the law of) conservation of charge?
Charging without contact, in which the charged object and the object being charged end up with opposite charges. (Requires grounding)
What is induction?
Rule: field lines go out of ____ charges and go into ____ charges.
What are positive and negative?
If the distance between two charges is cut in third, the electric force becomes ____ times as (small/large).
r_1=r \rightarrow r_2=1/3 r
What is 9 times larger?
An elementary charge e in coulombs, C.
What is 1.6*10^{-19} \ C ?
The category of material where charges cannot move freely throughout it.
What is an insulator?
The name of scenario in an insulator, where charges can shift slightly within molecules, creating a surface charge.
What is polarization?
The electric field direction is the direction of force on this sign of charge.
What is a positive charge?
Newton’s 3rd law in electrostatics: the force q₁ exerts on q₂ is ____ in magnitude and ____ in direction to the force q₂ exerts on q₁.
What is equal and opposite?
The number of elementary charges in 1 coulomb of charge.
What is 6.25*10^{18} \ e ?
The idea proven by Millikan: charges come only in whole-number multiples of e .
What is charge quantization? (Cannot be a fraction of e)
The process of connecting to Earth so that excess charge can flow away, leaving an object neutral.
What is grounding?
Between two large, oppositely charged parallel plates (close compared to their area), the field is approximately ____.
What is uniform (constant in magnitude and direction)?
Electric field strength Equation:______
What is \vec{E}=\vec{F_e}/q?
1 eV = ___
What is 1.60×10^{−19} \ J ?