Electricity Yr7 Flashcards
What is a Ammeter
device for measuring a current
What is a voltmeter
Device for measuring potential difference
What does a light bulb look like in a circuit
circle with a cross in the middle and a line either side
What does a switch look like in a circuit
A line with a open flap
Define current
The rate of flow of charge
Voltage
Another word for potential difference
Electrons
Charge carriers in wires
What is a complete circuit
There is a complete, unbroken path from one end of the cell/battery to another
How do you measure a current in a circuit
Place Ammeter in a circuit
How to measure potential difference in a circuit
place voltmeter parallel to components
Conductor
Material that an electric current can flow through
Define insulator
Material that an electrical current can not flow through
What Is A Electric Shock
When you touch a live wire