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Static and Current Electricity — Free MYP1 Sciences Practice Questions
1QuestionAttraction and Repulsion of ChargesConcept Practice
2 marks~3 minCriterion A
The diagram shows two pairs of balloons hanging from strings.
Pair A: one balloon has a positive charge () and the other has a negative charge (). The arrows point toward each other.
Pair B: both balloons have a positive charge (). The arrows point away from each other.
Pair A: one balloon has a positive charge () and the other has a negative charge (). The arrows point toward each other.
Pair B: both balloons have a positive charge (). The arrows point away from each other.
a
Identify the type of force shown by the arrows in Pair A and in Pair B. [1]
b
Describe why the balloons in Pair A behave differently from the balloons in Pair B. [1]
Solutions
2QuestionAttraction and Repulsion of ChargesAssessment Practice
3 marks~5 minCriterion A
Three balloons hang from strings. Balloon 1 and Balloon 2 are both negatively charged and push each other apart. When Balloon 3 is brought close to Balloon 1, it pulls Balloon 1 toward it.
a
Identify the type of charge on Balloon 3. [1]
b
Describe why Balloon 3 pulls Balloon 1 toward it. Use the term "opposite charges" in your answer. [1]
c
Describe what Balloon 3 would do to Balloon 2, and explain why. Use the term "like charges" in your answer. [1]
Solutions
3QuestionDefinition of Static ElectricityConcept Practice
3 marks~5 minCriterion B
A student rubs a balloon on a wool sweater. The table shows what happens.
| Number of rubs | 1 | 3 | 5 |
|---|---|---|---|
| Paper pieces picked up | 2 | 6 | 10 |
a
Identify the pattern shown in the table. [1]
b
Describe how rubbing the balloon on the sweater creates static electricity. [1]
c
Compare what happens to the balloon's charge after 1 rub and after 5 rubs, and explain why more paper pieces are picked up after 5 rubs. [1]
Solutions
4QuestionCharging by Friction Conduction and InductionConcept Practice
6 marks~9 minCriterion C
A student rubs a plastic ruler with different materials and counts how many paper clips it picks up.
| Number of rubs | 5 | 10 | 15 | 20 |
|---|---|---|---|---|
| Paper clips picked up (wool) | 2 | 5 | 8 | 11 |
| Paper clips picked up (silk) | 1 | 3 | 5 | 7 |
| Paper clips picked up (cotton) | 0 | 1 | 2 | 3 |
a
Identify which material caused the strongest static charge on the ruler. [1]
b
Describe what happens to the number of paper clips picked up as the number of rubs increases when using wool. [2]
c
Compare how well wool and cotton charge the ruler. Use the results in your answer. [3]
Solutions
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