Swetha tries to attract a pile of steel paper clips using a bar magnet. But there is a sheet of unknown substance between her magnet and the clips. Some possible substances are given for the sheet. Which of them will let her attract more pins and why?

Clay

Iron

Paper

Gold

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Solution

Since the bar magnet is same in all the cases, the material of the sheet is the main factor that decides the number of paper clips getting attracted to Swetha's magnet. If the sheet is made of a magnetic material, it helps her attract more of the paper clips.

Clay, paper, and gold are not magnetic materials. Iron is a magnetic material. Therefore, if the sheet should be made of iron for Swetha to attract more paper clips.

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Swetha tries to attract a pile of steel paper clips using a bar magnet. But there is a sheet of unknown substance between her magnet and the clips. Some possible substances are given for the sheet. Which of them will let her attract more pins and why? Clay Iron Paper Gold

Swetha tries to attract a pile of steel paper clips using a bar magnet. But there is a sheet of unknown substance between her magnet and the clips. Some possible substances are given for the sheet. Which of them will let her attract more pins and why?

Clay

Iron

Paper

Gold