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Electric Forces and Fields
Holt Physics Ch. 17
27
Physics
12th Grade
12/13/2011

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Cards

Term
Like Charges do what?
Definition
Repel
Term
Unlike Charges do what?
Definition
Attract
Term
Positively charged particles are called?
Definition
Protons
Term
Neutral particles are called?
Definition
Neutrons
Term
Negatively charged particles are called?
Definition
Electrons
Term
What are ions?
Definition
Atoms that are positively or negatively charged.
Term
What is the charge of a electron?
Definition
-1.60 x 10^-19
Term
What is the charge of a proton?
Definition
+1.60 x 10^-19
Term
What is a conductor?
Definition
Material that transfers charge easily such as metals.
Term
What is a insulator?
Definition
Material that does not transfer charge easily such as glass, rubber, silk, and plastic.
Term
What is it called when two objects become charged from rubbing together?
Definition
Charging by contact
Term
The process of charging a conductor by bringing it near another charged object and grounding the conductor is called?
Definition
Induction
Term
What is polarization?
Definition
When an object that has either positive or negative charge that is brought to a neutral charged object, the objects are attracted because the neutral charge can turn into any.
Term
What is the equation to Coulomb's law?
Definition
F = k q1q2/r^2
Term
Gravitational force is always have a positive?
Definition
mass
Term
Electric forces can be both?
Definition
Attractive or repulsive
Term
Define electric field
Definition
a region in space around a charged object in which a station ary charged object experiences an electric force because of its charge.
Term
What is the equation for measuring electric field intensity or strength?
Definition
E = F/q in N/C
Term
k = what?
Definition
9 x 10^9 Nm^2/C^2
Term
1 Coulomb = to what?
Definition
6.25 x 10^15
Term
when the answer is +, the forces are?
Definition
Repelling against each other.
Term
When the answer is -, the forces are?
Definition
Attracting each other.
Term
"u" is = to?
Definition
x 10^-6
Term
Define electric field lines.
Definition
Lines that represent both the magnitude and the direction of the electric field.
Term
When electric field lines for two point charges of equal magnitude but opposite signs it is called?
Definition
Electric dipole
Term
When no net motion of charge is occurring within a conductor, it is called?
Definition
Electrostatic equilibrium
Term
Electric potential difference and electromotive force, EMF.
Definition
V = w/q ; mg = Eq ; V = Ed
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