Magnetism

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

Question 1 of 37

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

Question 2 of 37

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

Question 3 of 37

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

Question 4 of 37

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

Question 5 of 37

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

Question 6 of 37

7. Attraction in a magnet only occurs:-

Question 7 of 37

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

Question 8 of 37

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

Question 9 of 37

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

Question 10 of 37

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

Question 11 of 37

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

Question 12 of 37

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

Question 13 of 37

14. What happens when you heat a magnet?

Question 14 of 37

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

Question 15 of 37

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

Question 16 of 37

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

Question 17 of 37

18. 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 18 of 37

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

Question 19 of 37

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

Question 20 of 37

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

Question 21 of 37

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

Question 22 of 37

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

Question 23 of 37

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

Question 24 of 37

25. State the Clock rule

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

Question 26 of 37

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

Question 27 of 37

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

Question 28 of 37

29. Define the basic law of magnetism

Question 29 of 37

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

Question 30 of 37

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

Question 31 of 37

32. Define ferromagnetic materials

Question 32 of 37

33. 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 33 of 37

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

Question 34 of 37

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

Question 35 of 37

36. Define the neutral point?

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