Topic 2- Series and parallel circuits Flashcards
What are the two ways that a component can be connected in a circuit
series (same loop)
parallel (adjacent loop)
How does the p.d across two components vary when connected in series and parallel
Series: Total p.d is shared between each component
Parallel: P.D across each component is the same
If two resistors are connected in parallel, what can be said about there combined total resistance?
Their total resistance is less than the smallest of the two individual resistances
If two resistors are connected in series, what can be said about their total resistance?
their total resistance is equal to the sum of the two individual resistances
Describe the current in a series circuit
The current is the same at all positions since the charge only has one path to flow through
Describe the current in a parallel circuit
The current is shared between the different branches. When the charge reaches a junction it splits
How should you connect an ammeter in a circuit to measure current?
Ammeters should be connected in series with the component that they are measuring current through
How should you connect a voltmeter in a circuit to measure potential difference?
Voltmeters should be connected in parallel to there component that they are measuring the p.d of
Why is it advantageous to connect lamps in parallel?
If one lamp blows, the rest will be unaffected and can still receive current