Question
Describe the following experiment with Diagram: To construct a simple compass.
✓
Answer
Apparatus — Materials: Bar magnet, iron needle, cork, tumbler. Apparatus — Materials: Bar magnet, iron needle, cork, tumbler. Procedure:
$(1)$ Magnetise an iron needle using a bar magnet.
$(2)$ Insert the magnetized needle through a small piece of cork or foam.
$(3)$ Let the cork float in water in a bowl or a tumbler. Make sure that the needle does not touch the water.
$(4)$ Make a note of the direction in which the needle points when the cork is floating. Rotate the cork, with the needle fixed in it in different directions. Note the direction in which the needle points when the cork begins to float again without rotating. Observation : The needle always comes to rest in the North — South direction. Conclusion : The cork floating in water starts acting like a compass and points in the North — South direction.
$(1)$ Magnetise an iron needle using a bar magnet.
$(2)$ Insert the magnetized needle through a small piece of cork or foam.
$(3)$ Let the cork float in water in a bowl or a tumbler. Make sure that the needle does not touch the water.
$(4)$ Make a note of the direction in which the needle points when the cork is floating. Rotate the cork, with the needle fixed in it in different directions. Note the direction in which the needle points when the cork begins to float again without rotating. Observation : The needle always comes to rest in the North — South direction. Conclusion : The cork floating in water starts acting like a compass and points in the North — South direction.
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