# Shared Flashcard Set

## Details

Electric Charge and Electric Force
conductors, insulators, coulomb's law, electric field
13
Physics
09/21/2012

Term
 Assessment Statement   What are the two types of elctrical charge?
Definition
 postive charges and negative charges
Term
 Assessment Statement   What does the law of conservation of electric charge state?
Definition
 1) the net amount of electric charge produced in any process in zero   2) no net charge can be created or destroyed
Term
 Assessment Statement   What is the equation for the magnitude of the electric force that one object exerts on another?
Definition
 F = (kQ1Q2)/(r2)
Term
 What are conductors?   What are insulators?
Definition
 Conductors - materials that transport electrical charge; many electrons are free to move   Insulators - materials that don't easily transport electrical charge; few electrons are free to move
Term
 What is the difference being induction and conduction?
Definition
 Conduction involves contact. Objects develop the same sign change.    Induced charges do not involce contact. The charges are just separated within the object.
Term
 What is the SI unit of charge?
Definition
 Coulomb (C)
Term
 What is the Coulomb constant (k)?   What is the charge on a electron (-e)?
Definition
 k = 8.99 x 109 N m2 C-2   -e = -1.6 x 10-19 C
Term
 Test charges always have what type of charge?
Definition
 a postive charge
Term
 What is the equation for the magnitude of an electric field (E)?
Definition
 E = F/q = k(Q/r2)
Term
 Electric field lines near a postive test charge point _______ (direction).
Definition
 outward
Term
 Electric field lines near a single negative charge point _______ (direction).
Definition
 inward
Term
 Electric field lines start on ________ charges and end on________ charges.
Definition
 postive; negative
Term
 Assessment Statement: Define eletric field.
Definition
 Electric field is defined as a region of space where a charged object exeriences a force due to its charge.
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