Chapter4 Flashcards
Is the study of stationary electric charges
Electrostatic
Study of electronic charges in motion
Electrodynamics
Electrical charge is measured in
Si unit, in coulomb 6.25 x 10^18
Good conductors have
Large numbers Free electrons
Good insulators have
Few free electrons
Example of good conductors
Cooper, water, and gold
Examples of good insulators
Glass plastic ceramic and wood
Five principles electrostatic: Like charges repel and unlike charges attract
the first principle
Five principles electrostatic: Electrostatic force between two charge is directly proportional to product of their quantities and inversely proportional to the square of distance
the second principle
Five principles electrostatic: Electric charges reside only on the external surface of a conductor
the third principle
Five principles electrostatic: The concentration of charge on a curved surface of a conductor is greatest where the curvature is greatest.
the fourth principle
Only negative charges are free to move in solid conductors
Five principles electrostatic: the fifth principle
In electrostatic, electfrication of objects occur when they gain a net positive or negative charge. True of false
True
Object may be Electricfied in 3 ways 
Friction, contact, induction
True or false for electric current to an electric potential must exist
Redo this one
True
An expression of the flow of electrons in a conductor.
Current
is measured in ampere
Current
Electron potential is measured in
Volts
The property of an element in a circuit’s that resists or impedes the flow of electricity
Resistance
Resistance is measured in
Ohm
Volts is named after
Volta who invented the battery
Is the potential difference that will maintain a current of 1 ampere in a circuit with a resistance of 1 ohm
Volts
True or false volts is the expression of the difference in electric potential between two points
True
True or false Volts is also equal to the amount of work ( joules ) that can be done per unit of charge
True