No Longer On Exam Flashcards
What are the 2 ways that a component can be connected in a circuit?
- Series (same loop).
- Parallel (adjacent loop).
How does the potential difference across 2 component vary when connected in series and parallel?
- Series: total potential difference is shared between each component.
- Parallel: potential difference cross each component is the same.
If 2 resistors are connected in parallel, what can be said about their combined resistance?
The total resistance is less than the smallest of the two individual resistances.
If 2 resistors are connected in series, what can be said about their total resistance?
Their total combines resistance is equal to the sum of the 2 individual resistances.
Describe the current in a series circuit
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
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 the component that they are measuring the potential difference of.
Why is it advantageous to connect lamps in parallel?
If one lamp blows/breaks, the rest will be unaffected and can still receive current since the circuit is still complete.
