Electricity and Magnetism Flashcards
If the charge is stationary and concentrated somewhere we have _____ electricity.
Static
If the charge is flowing we have _______ electricity
Current
A common way of creating static electricity is by ?
Friction
What happens while two objects rub together that create static electricity ?
Electrons move from one object to the other
The amount of electrical energy carried by the current ?
Voltage
Resistance (collisions in a circuit) transforms electrical energy into ?
Heat energy
As particles move through a circuit, their progress is hindered by collisions . This is called __________
Resistance
The rate at which energy is transformed from one thing to another ?
Power
Materials that allow current to flow are called ?
Conductors
Materials that do not have free electrons (electrons cannot flow) are called ?
Insulators
Insulators can build up static charges as _______ do not flow freely in an insulator
Electrons
Why are metals good conductors ?
Metals have free electrons in their outer valence shell, free electrons carry a charge therefore a current can flow
Earthing allows large electrical charges to travel safely into the ______ ?
Ground
What happens when a charged object comes into contact with a neutral object ?
Some of it’s charge (electrons) can be transfered to the other
An object will be positively or negatively charged if it ?
Gains or losses electrons
True or False:
Only electrons can move ?
True
Any charged object will attract a _______ object.
Neutral
Current:
Symbol:
Unit:
Symbol: I
Unit: Ampere
Energy:
Symbol:
Unit:
Symbol: E
Unit: Joule
Power:
Symbol:
Unit:
Symbol: P
Unit: Watts
Voltage
Symbol:
Unit:
Symbol: V
Unit: Volts
Time:
Symbol:
Unit:
Symbol: t
Unit: Seconds
Components in a ________ _________ are arranged so current must go through all components
Series Circuit
Voltage in a series Circuit will be ?
Shared between the components
