Question 15
Aisha makes an electromagnet like the one shown in the diagram. She uses the electromagnet to pick up paper clips. Aisha predicts that if she adds more cells, the strength of the electromagnet will increase. She does an experiment to test her prediction. The table shows her results.
| Number of cells | Number of paper clips attracted |
|---|---|
| 1 | 5 |
| 2 | 7 |
| 3 | 9 |
| 4 | 10 |
| 5 | 11 |
How could Aisha improve her investigation?
| Number of cells | Number of paper clips attracted |
|---|---|
| 1 | 5 |
| 2 | 7 |
| 3 | 9 |
| 4 | 10 |
| 5 | 11 |
How could Aisha improve her investigation?
