Electrostatic Study Guide Flashcards
Electrostatics
The study of electric charges that can be collected and held in one place
Conductor - provide multiple examples
A material that allows charges to move about easily
- Ex: copper, plasma, graphite
Insulator
A material through which a charge will not move easily
- Ex: dry air, cloth, glass
Name the three main parts of an electroscope
A metal knob, metal stem, and light weight metal foils called leaves
What is the Coulomb’s Law Equation
F = K q1q2/r^2
What are three applications of Electric Forces
laser printers, photocopy machines, and tiny paint droplets
What is the ohm’s law formula, what are the units and symbols
V = IR
V = volts
I = current, amps
R = ohms, resistance
What is the difference between superconductors and semiconductors
Superconductors face no resistance, while semiconductors have a conductivity between conductors and insulators
What are the four things that can affect resistance
Length, cross-sectional area, temperature, and material
A conventional current is the flow of ___________
positive charge
A __________ is a material with zero resistance
superconductor
In a __________ , there is only one path for the current to flow
series connection
Who was the narrator of the Cosmos episode titled “Electric Boy”
Neil deGrasse Tyson
Who is the “Electric Boy?”
Michael Faraday
Current is measured in units called _______
amperes
Power
watts
Parallel
more than one path for current to flow
Resistor
device designed to have a specific resistance
Ohm
unit of resistance
Joule
the unit of energy
What happens to the force between two changes if the magnitude of one charge is doubled?
Force doubles
Name the five main energy sources for creating electricity
coal, natural gas, petroleum, nuclear power, hydropower
Name the four alternative energy sources for creating electricity
geothermal, solar power, wind power, biomass
What is an electroscope designed to remove?
air currents
