Physics PPE revision Flashcards
what is potential difference?
Force driving flow of electrons
What is current?
A measure of the flow of electrons around a circuit
What is resistance?
Everything that resists or opposes the flow of electrons
What way does current flow in a circuit?
From the positive end to the negative end of a cell
What is the equation to calculate potential difference?
Potential difference = current x resistance
What is charge?
A measure of the total current that flowed within a certain period of time
What is the equation to calculate charge?
Q=IxT
Charge=current x time
What is a parallel circuit?
Contain more than one loop
What is a positive of parallel circuits?
If one component breaks, the rest of the components will stay in tacked
What is potential difference like in parallel circuits?
Same across all components
What is current like in parallel circuits?
Shared
What is resistance like in parallel circuits?
The more components that are added, the lower the total resistance is
Finish the sentence for parallel circuits: loops that have a greater resistance…
Loops that have a greater resistance have a lower share of current
