Question

Saba has 3 metal bars. To understand if they are magnets or not, she undertakes a small experiment and
holds the ends of the bars close to one another. The results of this experiment are plotted below.
BAR 1
BAR 2 BAR 3
Results:
End V (of Bar 1) End W (of Bar 2) Attracts
End V (of Bar 1) End X (of Bar 2) Repels
End V (of Bar 1) End Y (of Bar 3) Attracts
End V (of Bar 1) End Z (of Bar 3) Attracts
From the result above, conclude which bar(s) is/are magnetic? Give reason for your response.
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Answer 1

Answer:

bar 1 and bar 2 are the two magnet

Explanation:

this is because repulsion takes place between two like poles thus repulsion is the surer test to identity which is a magnet

Answer 2

The bar 2 is magnet.

Explanation:

The image given in the question is attached below.

• A magnet has north pole and south pole. The poles of same orientation repel and poles of different orientation attract each other.
• The bar 3 attracts for both the sides whereas the bar 2 attracts and repels each other. The bar 1 has given only one end.
• Since, the bar 2 has both north pole and south pole. Thus, bar 2 is a magnet whereas bar 1 & 3 is not a magnet.