Cicuits And Electricity Flashcards
What are circuits?
A circuit is a closed loop that electrons can travel in.
What is an ammeter?
Counts the number of charges that pass a point each second.
What is the symbol for current?
I
What is the symbol for voltage?
V
What is the symbol for resistance?
R
What is the unit for current?
Amps
What is the unit for voltage?
Volts
What is the unit for resistance?
Ohms
What is the definition of current?
The flow of charge around a circuit
What is the definition of voltage?
The measurement of potential energy that a source has.
What is the definition of resistance?
Indicates how difficult it is for current to pass through a component.
What is an electrical conductor?
A substance that allows the movement of charged particles.
What is an insulator?
Do not allow the free flowing movement of electrons.
How does the current work in series?
There is only one path for the electrons
What is the current like in parallel?
There is more than one route round for the electrons - so the current gets split up between the different routes.
What is the sentence about amps and volts in parallel and series?
Amps in series stay the same, amps in parallel change. Volts are the opposite.
What is a battery?
An electrical converter. It converts chemical potential energy into electrical energy.
What is a battery?
An electrical converter. It converts chemical potential energy into electrical energy.
Where is the neutrons located in an atom?
In the nucleus of an atom
Where is the protons located?
In the nucleus of an atom
Where are the electrons located?
On the shells of an atom
What charge do neutrons have?
Neutral
What charge do protons have?
Positive
What charge do electrons have?
Negative
When I rub a balloon on a cloth what charge will the cloth become?
Positive
Why would the cloth become positive?
Because the balloon is taking electrons from the cloth when being rubbed which is also causing the force friction to occur. Electrons are able to jump to the balloon as the cloth is an electrical conductor, and the balloon is an electrical insulator.
What effect would the balloon have if is placed near a thin stream of water from the tap?
The water would pull towards the balloon whichever way it is getting pulled.
Label three parts in a single cell battery
Chemical paste, metal rod, outer case
What direction do the arrows face on a magnet?
From north to south
