Magnetism

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

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

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

Question 3 of 37

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

Question 4 of 37

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

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

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7. 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?

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8. What happens when you heat a magnet?

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

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

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

Question 11 of 37

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

Question 12 of 37

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

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

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15. Define the basic law of magnetism

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16. Define ferromagnetic materials

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

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18. State the Clock rule

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19. 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 19 of 37

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

Question 20 of 37

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

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

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

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

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

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

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

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

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

Question 29 of 37

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

Question 30 of 37

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

Question 31 of 37

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

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

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

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35. Attraction in a magnet only occurs:-

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

Question 36 of 37

37. Define the neutral point?

Question 37 of 37