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Describe an activity to show that you ca...

Describe an activity to show that you can make an electromagnet in your school laboratory?

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MODERN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXERCISE
  1. The best material to make permanent magnet is

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  2. Name one metal each to make a permanent magnet and a temporary magnet.

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  3. Describe an activity to show that you can make an electromagnet in you...

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  4. What is meant by magnetic field? Mention two parameters that are neces...

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  5. What are magnetic field lines? How is the direction of a magnetic fiel...

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  6. Describe an activity to demonstrate the direction of the magnetic fiel...

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  7. Using Biot-Savart's law, derive an expression for magnetic field at th...

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  8. What is an electromagnet?

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  9. What is an electromagnet ? List any of its two uses?

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  10. Draw a labelled diagram to show how an electromagnet is made.

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  11. What is the purpose of the soft iron core used in making an electroma...

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  12. What are magnetic field lines? How is the direction of a magnetic fiel...

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  13. Draw the lines of force of the magnetic field through and around singl...

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  14. Consider a circular loop of wire lying in the plane of the table, let ...

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  15. Identify the nature of poles of the magnets in a given figures.

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  16. Draw magnetic field lines due to a current carrying circular wire plac...

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  17. What is the magnitude of the induced currents in circular loop KLMN of...

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  18. An alternating electric current has a frequency of 50 Hz. How many tim...

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  19. What will be the frequencey of alternating current if its direction ch...

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  20. What is the advantage of the third wire of earth connected in domestic...

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