P4.5 Series circuits Flashcards
What is the current rule in a series circuit?
The same current passes through each component
What is the p.d rule in a series cicruit?
Potential difference is shared between components because each electron in the circuit passes through both bulbs
How can you calculate the total p.d in a series circuit?
Total p.d is the sum of the potential difference of each cell
What is the total resistance equal to in a series circuit?
Is equal to the sum of the resistance of each component
Why does adding more resistors in series increase the total resistance?
More p.d is shared across the resistors - as a result the p.d across each of them is less then before - the current through the resistors is therefore less than before
As total p.d is unchanged the total resistance is therefore greater
