Electricity 1
Materials that allow electricity to move through it easily
Conductor
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.
The flow of electrons is called
Current
What is the pathway around which electrons flow?
Circuit
Plastic, glass, and rubber are good examples of
Insulators
Current is produced when charges move from a position of _____________ potential energy to __________ low potential energy.
What are high and low?
This circuit has one pathway
Series
Copper, silver, and even salt water are examples of
conductors
This circuit has more than 1 pathway
Parallel
What is the unit for voltage?
Volts
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
In this type of circuit, if one lightbulb goes out, the others will not be affected
Parallel
An electrical safety device that operates to provide overcurrent protection of an electrical circuit.
Fuse
What is the unit for current?
amperes
These charges repel each other and these charges attract each other. (2 answers)
What are like and opposite charges?
a protective clothing necessary for protecting the eyes
googles
Which quantity is measured in watts
power
Batteries generally have how many and what kind of terminals?
What are 2 - 1 positive and 1 negative?
materials with conductivity between that of a good conductors and insulators
semiconductor
Potential difference is measure in ______________.
a) amperes
b) volts
c) coulombs
d) neutron
What are (b) volts?
______________ is caused by internal friction of electrons.
What is resistance?
Electric force depends on the ___________ and ___________ of each charged object.
What are charge and distance?
This is the difference between a fuse and a circuit breaker.
What is a fuse is disposable, whereas a circuit breaker can be re-used?
According to ohms law v is equal to
V =
IR