Physics P2 4.6 Parallel circuits.

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How are components connected in a parallel circuit?
In a parallel circuit each component is connected across the supply, so if there is a break in one part of the circuit, charge can still flow in the other parts.
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In a parallel circuit, how does the size of the resistance of a component relate to the current?
The bigger the resistance of a component, the smaller the current is.
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What is the potential difference in a parallel circuit?
In a parallel circuit the potential difference is the same across each component.
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What equation is used to calculate the current through a resistor in a parallel circuit?
Slanted I (look up because I'm not sure) = V over R.
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Why are there junctions in a parallel circuit?
So that different amounts of charge can flow through the different components.
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What does the current through each component depend on?
Its resistance, the bigger the resistance of a component the smaller the current through it.
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What is the total current through the whole of a parallel circuit equal to?
The sum of the currents through the separate components.
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Why are parallel circuits much more useful than series circuits in everyday life?
Because a break in one part of the circuit does not stop charge flowing in the rest of the circuit.
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What happens in a parallel circuit if one component stops working?
Current cannot flow through that component but it can flow in other parts of the circuit.
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In a parallel circuit what is the relationship between the supply pd and the pd across each parallel component?
They are equal.
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**LOOK UP DIAGRAMS OF COMPONENTS IN PARALLEL**
**LOOK UP AND PRACTICE MATHS EQUATIONS FOR CALCULATING PD ACROSS RESISTORS = PD ACROSS THE BATTERY**
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Other cards in this set

Card 2

Front

In a parallel circuit, how does the size of the resistance of a component relate to the current?

Back

The bigger the resistance of a component, the smaller the current is.

Card 3

Front

What is the potential difference in a parallel circuit?

Back

Preview of the front of card 3

Card 4

Front

What equation is used to calculate the current through a resistor in a parallel circuit?

Back

Preview of the front of card 4

Card 5

Front

Why are there junctions in a parallel circuit?

Back

Preview of the front of card 5
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