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What is the form of magnetic field lines...

What is the form of magnetic field lines due to a straight current-carrying conductor?

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The magnetic field lines are cocentric circles with the conductor at the centre.
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PRADEEP-MAGNETIC EFFECTS OF ELECTRIC CURRENT-Additional Questions A. (very short)
  1. The magnetic field in a given region is uniform. Draw a diagram to rep...

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  2. What important observation did Oersted make in his experiment with cur...

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  3. What is the form of magnetic field lines due to a straight current-car...

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  4. State the rule that is used to find the direction of magnetic field ac...

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  5. How do you locate a current-carrying wire concealed in a wall?

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  6. Name the unit used to measure magnetic field.

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  7. What is a solenoid?

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  8. What for do we apply clock-rule?

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  9. What is the effect of inserting a soft iron core inside a current-carr...

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  10. What is the composition of the alloy Alnico?

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  11. What is the composition of the alloy Nipermag?

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  12. What type of core is used to make an electromagnet?

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  13. What are permanent magnets made of?

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  14. Why is soft-iron not used for making a permanent magnet?

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  15. Name the rule to find the direction of force on a current-carrying con...

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  16. What is the relation between a tesla, an ampere and a meter.

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  17. What is the force acting on charge (q) moving in a direction perpendic...

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  18. Which rule do we use to find the direction of this force?

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  19. How are magnetic field lines related to the strength of a magnetic fie...

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  20. What is the relation between magnetic field (B), current (I) and dista...

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