Magnetism

1. Destroying the magnetic properties of a magnet is called?

Question 1 of 37

2. Name the biggest disadvantage of the stroking method of magnetism?

Question 2 of 37

3. A material is said to be magnetically saturated when:-

Question 3 of 37

4. Which of the following is not a method of magnetization?

Question 4 of 37

5. The region or space where magnetic influence is felt is called?

Question 5 of 37

6. State the Right-Hand Grip rule as applied to electromagnets

Question 6 of 37

7. Which of the following methods is the sure test for polarity?

Question 7 of 37

8. Which of the following is not an application of a magnet?

Question 8 of 37

9. What happens when you heat a magnet?

Question 9 of 37

10. In the stroking method of magnetisation, the end of the material i.e. needle where the magnet finishes the stroking pattern acquires an opposite polarity to that of the stroking end of the magnet?

Question 10 of 37

11. Magnetic materials which are difficult to magnetize but once magnetized retain their magnetism for a long time are said to be:-

Question 11 of 37

12. State the Clock rule

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13. Define the basic law of magnetism

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14. Define ferromagnetic materials

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15. A magnet is an object which attracts magnetic materials such as cobalt, iron and nickel.

Question 15 of 37

16. A magnetic field line originates from the North Pole and ends at the South Pole. True or False?

Question 16 of 37

17. Attraction in a magnet only occurs:-

Question 17 of 37

18. Magnetic shielding is a property of certain materials to concentrate magnetic field hence leaving some areas totally free of magnetic influence?

Question 18 of 37

19. Name two ways in which the polarity of a material which has been magnetized by electrical method can be determined?

Question 19 of 37

20. Which of the following is not a property of magnets

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21. The path along which a north pole would move if free to do so is called?

Question 21 of 37

22. Which of the following method is not a demagnetization method?

Question 22 of 37

23. Why are magnets placed in an East-West direction when they are being demagnetized?

Question 23 of 37

24. Explain how you can demagnetize a magnet using hammering method?

Question 24 of 37

25. Which of the following is NOT true about magnetic field lines?

Question 25 of 37

26. Which of the following statements is correct about a magnetic field?

Question 26 of 37

27. What is the importance of keepers in the storage of magnets?

Question 27 of 37

28. A material is said to be magnetized when most of its domains are aligned in 1 direction?

Question 28 of 37

29. How can you test the polarity of a magnet?

Question 29 of 37

30. Which of the following is not true when a material like a pin is magnetized by induction method?

Question 30 of 37

31. Why is repulsion the only sure test of polarity of an unknown Magnet?

Question 31 of 37

32. The direction of the magnetic field at a point is the direction which a free North Pole would move if placed at that point in the field?

Question 32 of 37

33. Why are electrical measuring instruments and watches covered by soft iron rings?

Question 33 of 37

34. A magnet whose field lines are more concentrated means?

Question 34 of 37

35. Define the neutral point?

Question 35 of 37

36. Which of the following statements is INCORRECT about the domain theory?

Question 36 of 37

37. Magnetic materials which are magnetized easily but do not retain their magnetism are said to be:-

Question 37 of 37