PHYSICS - electricity Flashcards
What are the tiny electric charges on you clothes?
Static electricity
How is a crackle in a jumper caused ???
It is caused by electric charges in your clothes.
What is the electric charge on your clothes called ???
It’s called static electricity.
How does your jumper and shirt get electrically charged ???
When they rub together.
What do you need for an electric current ??? ( We need 2 things)
- Something to make electricity flow, such as a battery or power pack.
- A complete path for the current oath to flow in.
What is an electric circuit ???
An electric circuit is a path in which electrons from a voltage or a current source flow
What happens when your shirt and jumper rub together?
They become electrical charged
What flows in the wire when an electric charge is moving in a wire?
Electric current
What two things do you need for an electric current to flow?
1) Something to make the electricity to flow, like a battery of power pack
2) A complete path for the electric current to flow [A complete circuit]
The beginning and end parts of the circuit need to be joined together for the electrical charge be able to ____?
To flow through the circuit
What is electrical resistance measured by?
Ohms
What is a volt?
Potential difference on one side of the circuit and the other?
What is the difference between a series circuit and a parallel circuit?
Parallel circuits have branches and series circuits don’t
What happens when electrical charge is increased?
The current gets bigger
How do you measure current?
in Amp units
How do you show/produce amp reading?
On an ammeter
How do you measure voltage?
In volts
How do you show/produce volt readings?
On a voltmeter
What increases with the amount of cells?
The voltage increases
Which measuring device do you use in a series circuit?
An ammeter
Which measuring device do you use in a parallel circuit?
A voltmeter
In a series circuit, what happens when you add more cells?
The current becomes greater
What is the same everywhere on a series circuit?
The current
What doesn’t happen to current?
It gets all used up
