Cambridge Secondary (7-9). Stage 8. MCE Science. Workbook - Unit 11: Magnetism - Question 13

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 |

Is her prediction correct? Explain your answer.