Question

1. By which metal magnetic keeper made up off.

2. What is the strength of bar magnet at the centre of the magnet.

3. If a bar magnet cut in to 5 equal parts. Then how many number of North & South poles come form.

4. Classify the methods for making magnet.(named only)

5. What are the methods of demagnetising a permanent magnet?

Short Answer Type Questions

6. How does a magnet lose its power?

7. What is electromagnet?

8. Distinguish between the temporary and permanent magnet.

9. What is magnetic and non-magnetic material explain with example.

10. On what factors electromagnet depends on ?

Long Answer Type Questions

11. The power of magnet is concentrated at its poles. Prove it.

12. Draw the diagram of magnetic compass and its uses.

13. Explain repulsion is the surest test of magnet.

14. How you can say an artificial electromagnet is much stronger than a natural magnet.

15. Discuss the properties of bar magnet.

HOTS & Value Based Questions

16. Which magnet is used in an electric bell?

17. What are the properties of a magnet?point duga bahut sare​

Answer 1

Answer:

1. A magnet keeper, also known historically as an armature, is a bar made from magnetically soft iron or steel, which is placed across the poles of a permanent magnet to help preserve the strength of the magnet by completing the magnetic circuit; it is important for magnets that have low magnetic coercivity, such as ...

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