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In which of the following devices tempor...

In which of the following devices temporary magnets are used ?

A

Dynamo

B

Electric motors

C

Generators

D

Electric cranes

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The correct Answer is:
D
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PEARSON IIT JEE FOUNDATION-MAGNETISM -Concept Application (level-1)
  1. Natural magnets are stronger than artificial magnets.

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  2. Magnetic lines of force are

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  3. In which of the following devices temporary magnets are used ?

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  4. Which of the following properties of a magnet is/are used in navigatio...

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  5. Choose the correct match. {:("(i) Primary succession","(a) Fast"),("...

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  6. The direction of magnetic field at any point inside the field is given...

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  7. Which of the following is a non- magnetic substance ?

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  8. When an iron bar is moved over a bar magnet along its length the attra...

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  9. The attracting power of a magnet is

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  10. The above diagrame is the pattern of magnetic lines of force obtained ...

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  11. In the single touch method of magnetization , the north pole of a bar ...

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  12. Assertion: Magnetic lines of force never intersect. Reason: The dire...

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  13. The vertical plane in which magnetic needle lies at a place is called

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  14. The effective length of the magnet shown above is .

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  15. The equatorial meridian of a magnet

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  16. A bar magnet is moved over a steel bar as shown in the figure. Choos...

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  17. When a magnet is broken into two parts,

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  18. In the electrical method of magnetization, the polarity of the end in ...

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  19. An electric bell works on the principle of

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  20. Define angle of declination.

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