Current and voltage in circuits Flashcards
(13 cards)
Why is a parallel circuit more appropriate for household lighting?
Because lights can work independently from each other
When is the series circuit used?
For only a few things e.g fairy lights
In a series circuit is the current the same everywhere or different in different parts of the circuit?
The current is the same everywhere
What does the current in the series circuit depend on?
Total potential difference and total resistance of the circuit?
What component can you use to indicate the presence of a current in a circuit?
Lamps and LEDs
What is current?
The rate of flow of charge
What is the relationship between charge current and time?
Charge = current X time
Electric current in solid metallic conductors? Is a flow of what?
Negatively charged electrons
in a parallel circuit, How is the current shared?
The current is shared between branches.
In a parallel circuit, what does the resistance of the branch depend upon?
The current branch depends on the resistance of the branch.
What is voltage?
Voltage is the energy transferred per unit charge past.
What is a volt?
The volt is a joule per coulomb
What is the relationship between energy transfered, charge and voltage?
Energy transfered = charge X voltage
E = Q x V
