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List two sources of magnetic fields ....

List two sources of magnetic fields .

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Magnet , moving charges in space , electric current through conductor .
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KUMAR PRAKASHAN-MAGNETIC EFFECTS OF ELECTRIC CURRENT -ANSWER THE FOLLOWING QUESTIONS IN VERY SHORT AS DIRECTED (MISCELLANEOUS):
  1. State the effect on the strength of the magnetic field produced a...

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  2. Mention the angle between a current - carrying straight conductor a...

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  3. List two sources of magnetic fields .

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  4. There are two wires. One of them carries a current . How will you find...

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  5. How will the magnetic field intensity B at the centre of a circular...

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  6. PQ is a current - carrying long straight conductor in the plance of...

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  7. PQ is a current - carrying long straight conductor in the plane of ...

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  8. In the experiment to show that a current - carrying condcutor (rod) ...

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  9. A compass needle is placed near a current - carrying straight wire ....

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  10. The magnetic field lines of two bar magnets A and B are shown belo...

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  11. Name any two source of direct current .

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  12. Name the device used to prevent damage to the electrical appliance ...

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  13. State value of potential difference between the live wire and neut...

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  14. State one difference between the wires used in the element of an ele...

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  15. In a domestic electric ciruit -wiring , with which wire do we con...

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  16. Mention two ways to increases the strength of the magnetic field of ...

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  17. Give the significance of the electric meter in a domestic circuit.

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  18. A domestic circuit has a line of 5A ratting. How many lamps of ratt...

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  19. Give any two uses of an electromagnet .

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  20. A constant current I flows in a horizontal wire in the plane of paper...

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