Physics Definitions UNIT TEST Flashcards
(18 cards)
What is a Conductor?
& Examples
Allows electricity to flow easily (e.g., copper, aluminum).
What is a Semiconductor
& Examples
Partially conducts electricity under specific conditions (e.g., silicon).
What is an Insulator?
Resists flow of electricity (e.g., rubber, plastic).
What is Electricity?
Electricity is the flow of electrons.
What is Electrical Energy?
Electrical energy is energy from moving charges
What is Static Electricity?
Charge is stationary (an electric charge that is at rest, meaning it has no velocity or movement), builds up on surfaces.
What is Current Electricity?
Electrons flow continuously through a circuit.
I
What is Current?
The flow of electric charge (electrons). It’s measured in amperes (A) using an
ammeter
(I)
What is a Circuit?
A closed path for electrons to flow.
What is Induction?
The transfer of charges by no contact. The object remains overall neutral unless grounded.
What is Charging by Contact?
Both objects end up with the same type of charge.
What is Friction?
When two objects are rubbed against eachother
What is the Electrostatic Series?
A list of materials ranked by their ability to gain or lose electrons through friction.
V
What is Potential Difference?
Potential difference is the energy per charge (V).
R
What is Resistance?
Resistance is the opposition (goes against) to current flow, measured in ohms (Ω).
What is a Smart Meter?
Smart Meter: Measures energy usage in real time.
What is a Phantom Load?
Phantom Load: Energy used by devices when off.
What is Time-of-Use Pricing?
Time-of-Use Pricing: Cost varies depending on time of day.
