Topic 2 - (electricity) Flashcards
What are materials that CAN conduct electricity called?
CONDUCTORS
What are materials that CAN’T conduct electricity called?
INSULATORS
What is an example of a conductor?
- metals
What are some examples of insulators?
- wood
- plastic
- glass
What is current?
The flow of charge around a circuit
What is charge measured in?
Coulombs
What is current measured by?
An ammeter
What does an ammeter do?
Measures the amount of coulombs of charge per second
What are joules of energy carried around a circuit by?
By coulombs of charge
What is energy measured in?
Joules
Does the switch have to be open or closed for a circuit to work?
Closed
What is voltage?
The amount of joules of energy per coulomb
What is voltage measured by?
A voltmeter
What is voltage measured in?
Volts
What is charge measured in?
Amps
What does a voltmeter do?
Measures the amount of joules if energy before and after going through it, OR the amount of energy pushing the charge
What is a series circuit?
A circuit in which all the components are connected one after another, in a complete loop of conducting wire
What is a parallel circuit?
A circuit in which each of the components is connected separately in its own loop of wire
In a series circuit, what happens to the current?
The currant is the SAME in all places
In a parallel circuit, what happens to the current?
It splits up
In a series circuit, which routes can the current take?
Only 1 route
In a series circuit, how will a break in the circuit effect the current?
The current will stop flowing anywhere
In a parallel circuit, how will a break in the circuit effect the currant?
It won’t stop the current because it has different routes to go
In a parallel circuit, which routes can the current take?
More than 1, depending on the circuit
Is burning fossils a renewable or non renewable way of generating electricity?
Non renewable
List some renewable methods of generating electricity:
- wind
- solar
- hydroelectric
What slows down the flow of energy?
Insulators
What is the formula for hooke’s law?
F = K x E
What do each of the symbols, - (f, k and e) - mean in the formula for hooke’s law?
F - force
K - Spring constant
E - extension
What type of energy does a spring store?
Elastic potential energy
What is elastic limit?
The amount to which an elastic object can be stretched before losing its original shape
