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 switch.
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
What is the colour of the earth wire in a three pin plug?
green and yellow
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
Which light bulb contains mercury?
fluorescent
a protective clothing necessary for protecting the eyes
googles
Which quantity is measured in watts
power
What is the colour of the neutral wire in a three - pin plug
blue
materials with conductivity between that of a good conductors and insulators
semiconductor
A fire caused by a oil should never be extinguished with
water
fuel and heat are two parts of the fire triangle what is the third?
oxygen
When the electricity reaches the filament inside the lightbulb, what is most of energy transformed into?
Heat
What is the unit for resistance?
ohms
According to ohms law v is equal to
V =
IR