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Question
Three specimens of magnetic material were tested using the apparatus shown in the diagram.
When the switch is closed, the specimen picks up some of the iron nails but when the switch is opened, many or most of the nails fall off. The number of nails picked up and left on were found for three specimens. The table shows the results.Specimen Number of nails picked up Number of nails left on X 35 4 Y 20 10 Z 40 3
Which among the following pair of elements are suitable in the construction of electric bell?
Three specimens of magnetic material were tested using the apparatus shown in the diagram.
When the switch is closed, the specimen picks up some of the iron nails but when the switch is opened, many or most of the nails fall off. The number of nails picked up and left on were found for three specimens. The table shows the results.
When the switch is closed, the specimen picks up some of the iron nails but when the switch is opened, many or most of the nails fall off. The number of nails picked up and left on were found for three specimens. The table shows the results.
| Specimen | Number of nails picked up | Number of nails left on |
| X | 35 | 4 |
| Y | 20 | 10 |
| Z | 40 | 3 |
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Solution
The correct option is C X, Z
Elements X and Z can behave as electromagnets. Hence are suitable in the construction of an electric bell.
Elements X and Z can behave as electromagnets. Hence are suitable in the construction of an electric bell.
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