4.2.2 Series and parallel circuits

What are the two ways that a component can be connected in a circuit?

Series and parallel

How can you describe the potential difference in a series circuit?

The total pd is shared between each component

How can you describe the potential difference in a parallel circuit?

The pd across each component is the same

If two resistors are connected in parallel, what can be said about their 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 combined 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 and 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 pd of

What is an advantage of connecting lamps in parallel?

If one lamp blows, the rest will be unaffected and can still receive current