Topic 2 Current And Circuit Symbols Flashcards
What is the unit of current
Amperes
When will electrical charge only flow
If there is a closed circuit with potential difference
In a single closed loop what is the current like
The same value everywhere
What is potential difference
The force (voltage) that pushes the charge around
What is potential difference measured in
Volts
What is resistance
Anything that slows the flow down
What is resistance measured in
Ohms
What does the current flowing through the component depend on
The potential difference across it and the resistance of the component
The greater the resistance across the component
The smaller the current that flows (for a given potential difference across the component)
Definition of current
Current is the rate of flow of charge
What is charge measured in
Coulombs
More charge passes around the circuit when
A greater current flows
Charge of flow
Current x time
Circuit symbols
Flash cards
