Magnetism

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

Question 1 of 37

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

Question 2 of 37

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

Question 3 of 37

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

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5. Attraction in a magnet only occurs:-

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6. State the Clock rule

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

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

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

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

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

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

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

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

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

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16. 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 16 of 37

17. 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 17 of 37

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

Question 18 of 37

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

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

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21. Define the basic law of magnetism

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

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

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24. Define the neutral point?

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

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

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

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

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

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

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31. 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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32. What happens when you heat a magnet?

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

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34. Define ferromagnetic materials

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

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

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

Question 37 of 37