Resistance
Materials that allow electricity to move through it easily
Conductor
What is the pathway around which electrons flow?
Circuit
What is the unit for voltage?
Volts
Current is produced when charges move from a position of _____________ potential energy to __________ potential energy.
High
Low
Materials that do not allow electricity to move through them easily
Insulator
What is the purpose of a switch
To open and close the circuit.
What is the unit for current?
amperes
The flow of electrons is called
Current
Plastic, glass, and rubber are good examples of
Insulators
What is the difference between an open circuit and a closed circuit
Closed - electrons can flow and circuit is working
Open - electrons cannot flow and circuit is not working
This circuit has more than 1 pathway
Parallel
An electrical safety device that operates to provide overcurrent protection of an electrical circuit.
Fuse
Copper, silver, and even salt water are examples of
conductors
This circuit has one pathway
Series
These charges repel each other and these charges attract each other. (2 answers)
What are like and opposite charges?
a short piece of metal, inserted in the circuit, which melts when excessive (too much) current flows through it and thus breaks the circuit loop stopping the flow of electricity
Fuse
______________ is caused by internal friction of electrons.
What is resistance?
In this type of circuit, if one lightbulb goes out, the others will not be affected
Parallel
According to ohms law v is equal to
V =
IR
The difference between a fuse and a circuit breaker:
A fuse is disposable, whereas a circuit breaker can be re-used