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Topic 4.5
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1
In a series circuit, the number of pathways available to current is…
A)zero.
B)one.
C)two.
D)more than two.
2
Current is…
A)the same at every point along a series circuit.
B)the same at every point along a parallel circuit.
C)variable at every point along a series circuit.
D)greater in the branches of a parallel circuit than at the source.
3
What happens in a series circuit if a light bulb burns out?
A)Other branches will allow the current to continue to flow.
B)The next bulb will burn brighter.
C)Resistance will increase.
D)Current will stop flowing.
4
An electrical circuit that provides more than one pathway is known as…
A)a short circuit.
B)an alternating circuit.
C)a series circuit.
D)a parallel circuit.
5
If the potential difference across the battery in a series circuit with three loads is 9 V, which of the following statements is true?
A)The potential difference across each load in the circuit is 9 V.
B)The sum of the potential differences across each load in the circuit is 9 V.
C)The potential difference across each load in the circuit is 3 V.
D)The sum of the potential differences across each load in the circuit is 3 V.
6
Which of the following applies to a parallel circuit?
A)The current leaving the source is less than the current in each of the branches.
B)The current leaving the source is the same as the current in each of the branches.
C)The potential difference across the source and each of the branches is the same.
D)The potential difference across the source and each of the branches is different.
7
When more light bulbs are added to a parallel circuit, what happens to the brightness of the bulbs?
A)The brightness of all of the bulbs increases.
B)The brightness of all of the bulbs decreases.
C)There is no change in the brightness of the bulbs.
D)The new bulb that is added will be brighter than the other bulbs.





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