Electricity Flashcards
Static Electricity
The accumulation of excess electric charge on an object
Law of conservation of change
Charge can be transferred from object to object, but it cannot be created nor destroyed
Conductor
A material in which electricity can move in easily
Insulator
A material in which electricity cannot move easily
Charging by contact
Transferring electric charge by touching or rubbing
Charging by induction
The rearrangement of the electrons on a neutral object
Electric current
The net movement of electric charges in a single direction
Voltage difference
Related to the force that causes electric charge to flow
Circuit
A closed path that electric currents follow
Resistance
The tendency for a material to oppose the flow of electrons
Ohm’s law
The current in a circuit equals the voltage difference divided by the resistance.
Series circuit
Where the current only has one loop to flow through
Parallel circuit
They contain two or more branches for current to move through
Electric Power
The rate at which electrical energy is converted to another form of energy
Wet cell battery
Wet cell batteries have a pool of liquid electrolytes
Dry cell battery
Dry cell batteries have a pool of liquid electrolytes
Fuse
A service that delivers usable electrical circuit over current safety
Circuit breaker
an automatic device for stopping the flow of current in an electric circuit as a safety measure
Watts
The SI unit of power
Amperes
The SI base unit of electrical current
