Cp9 Electricity And Circites Flashcards
What is electrical current measured in
Amperes (amps)
What does an ameter do
Is connected in a series circuit to measure the current passing through a component or circuit
What is potential difference
It pushes current round an electrical circuit
What is potential difference also known as
Voltage
What does a circuit need to flow
Electrons
What do electrons do when a circuit flows
They all move together
What does a bigger potential difference do
It gives a bigger current to components
In a parallel circuit what is the same
The potential difference across each branch of the circuit
What is a voltmeter
A voltmeter is always connected in parallel to measure to measure the potential difference across a component or a circuit
What is electric charge measured in
Coulombs
What is resistance measured in
Ohms
What is an LDR
Light dependent resistor
What is power measured in
Watts (W)
What do aplineces that need a lot of power use
Mains electrics
What does the national grid do
Supplies homes with electricity trough a network of wires and cables
