Electricity Flashcards
Static electricity
The accumulation of excess electricity charge on an object
Law of conservation of charge
charge can be transferred from object to object but cannot be created or destroyed
Conductor
a material in which electrons are able to move easily
Insulator
a material in which electrons are not able to move easily
Charging by contact
The process of transferring charge by touching or rubbing
Charging by induction
The rearrangement of electrons on a neutral object caused by a nearby charged object
electric current
The net movement of electric charges in a single direction
Voltage difference
a related to the force that causes electric charges to flow
circut
a closed path that electric current follows
Resistance
The tendency for a material to oppose the flow of electrons
Ohms Law
The current in a circuit equals the voltage difference divided by the resistance
Series circuit
The current has only one loop to flow though
Parallel circuit
Contain two two more branches for a current to move through
Electric power
The rate a which energy is converted to another form of energy
Wet cell battery
Contains two connected plates made of different metal or metallic compounds in conducting solution
Dry Cell Battery
Consists of two electrodes surrounded by a material called an electrolyte
Fuse
Contains a small piece of metal that melts if the currents becomes too higjh
Circuit Breaker
Ia another device that prevents a circuit from overheating and causing a fire
Watt
The unit for power
Amperes
The measurement of the electric current flowing in a circuit
