Magnetism

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

Question 1 of 37

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

Question 2 of 37

3. Define ferromagnetic materials

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

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

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

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

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

Question 8 of 37

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

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

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

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

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13. State the Clock rule

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

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15. Attraction in a magnet only occurs:-

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

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

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

Question 18 of 37

19. 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 19 of 37

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

Question 20 of 37

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

Question 21 of 37

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

Question 22 of 37

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

Question 23 of 37

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

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25. 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 25 of 37

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

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

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

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

Question 29 of 37

30. What happens when you heat a magnet?

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31. Define the basic law of magnetism

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32. Define the neutral point?

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

Question 33 of 37

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

Question 34 of 37

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

Question 35 of 37

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

Question 36 of 37

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

Question 37 of 37