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. ​

Answer 1

Answer:

Only Bar 2 is the magnet

Explanation:

As per given observations , for Bar 1, we aren't given any results for the other end so we cant say with guarantee that it is a magnet

As per given observations, for Bar 2 both are able to perform attraction and repulsion respectively. So, Bar 2 is a magnet

As per given observations , for Bar 3, we see that both points seem to have the same poles, in magnet this is not possible. Hence it is not 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.