Science quiz 2 Flashcards
(21 cards)
What are the 2 types of electric circuits
Series and Parallel
Describe series and parallel circuits
For series circuits, current flows through one pathway and for parallel circuits, current flows through multiple pathways
What is used to measure current
ammeter measures amps aka current
Does the ammeter need to be in series or parallel to measure current
Series
Can the circuit work without the ammeter
NO
What must the dial be set to in the ammeter
Dial must be set to current
What is used to measure voltage/energy
Voltmeter
Can the voltmeter work in series or parallel
Parallel
Describe resistors
Answer in notes
What is used to measure resistance
An ohmmeter
Where do you measure resistance
resistance is measured outside the circuit
Describe a circuit breaker
YK
Describe a fuse
YK
What is the difference between a circuit breaker and a fuse
YK
What are ground wires
This is an additional safe way to make current flow to the ground to prevent harm to anyone
where does 90 percent of alberta’s electricity come from
Fossil fuels
What do they emit
SO2- green house effect, SOx- acid rain, NOx- acid rain and smog
What are the 2 main problems in transmitting electricity
Distance from the thing generating electricity and the amount of energy required.
To increase the amount of energy transmitting per second what do we do
Rememeber p=iv, You can increase current or voltage or both.
What is a transformer
It basically transforms AC voltage inputed into another AC voltage for another circuit to use
How does a transformer work
The primary coil creates a magnetic field and this travels through the iron core creates an electrical current in the secondary coil
