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Series and Parallel Circuits — Free MYP1 Sciences Practice Questions
1QuestionDifference Between Series and Parallel CircuitsConcept Practice
2 marks~3 minCriterion A
The two circuits below show different ways to connect bulbs.
Circuit X has two bulbs connected in one single loop. Circuit Y has two bulbs each connected on its own separate branch.
Circuit X has two bulbs connected in one single loop. Circuit Y has two bulbs each connected on its own separate branch.
a
Identify which circuit is the series circuit and which is the parallel circuit. [1]
b
Describe one difference between how electricity flows in a series circuit and in a parallel circuit. [1]
Solutions
2QuestionDifference Between Series and Parallel CircuitsConcept Practice
2 marks~3 minCriterion A
The diagram shows a series circuit and a parallel circuit, each with a battery and bulbs connected by wires.
a
Label one component that appears in both circuits. [1]
b
Describe one difference between how the bulbs are connected in the series circuit and the parallel circuit. [1]
Solutions
3QuestionReal-Life Applications Home and School CircuitsConcept Practice
2 marks~3 minCriterion B
A student adds more bulbs to a series circuit, one at a time, and records how bright the bulbs glow.
| Number of bulbs | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Brightness | Very bright | Bright | Dim | Very dim |
a
Identify the independent variable in this investigation. [1]
b
Describe how changing this variable affects the brightness of the bulbs. [1]
Solutions
4QuestionReal-Life Applications Home and School CircuitsConcept Practice
3 marks~5 minCriterion C
The table below shows the current measured in a series circuit with different numbers of identical bulbs.
| Number of bulbs | 1 | 2 | 3 |
|---|---|---|---|
| Current (A) | 0.6 | 0.3 | 0.2 |
a
Identify the current when 1 bulb is connected. [1]
b
Describe what happens to the current as more bulbs are added to the series circuit. [1]
c
A student says: "Adding bulbs to a series circuit is like adding more blocked pipes — the water flows more slowly each time." Describe one way this comparison matches what the data shows. [1]
Solutions
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