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Compare the magnetic fields due to a str...

Compare the magnetic fields due to a straight solenoid and a bar magnet.

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Both the fields are identical. A long straight current carrying solenoid bahaves as a bar magnet having dipole moment `vecm = N I vecA`
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The magnetic field due to a bar magnet _____

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(a)Using Ampere's circuital law,obtain the expression for the magnetic field due to a long solenoid at a point inside the solenoid on its axis. (b)In what respect is a toroid different from a solenoid?Draw and compare the pattern of the magnetic field lines in the two cases. (c)How is the magnetic field inside a given solenoid made strong?

U-LIKE SERIES-MAGNETISM AND MATTER-VERY SHORT ANSWER QUESTIONS
  1. Compare the magnetic fields due to a straight solenoid and a bar magne...

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  2. What should be the orientation of a magnetic dipole in a uniform magne...

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  3. What should be the orientation of a magnetic dipole in a uniform magne...

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  4. What is geomagnetic equator ?

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  5. A magnetic needle, free to rotate in a vertical plane, orients itself ...

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  6. Where on the surface of earth is the vertical component of earth's mag...

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  7. What is the angle of dip at a place, where the horizontal and vertical...

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  8. Where on the surface of earth is the angle of dip 90^@ ?

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  9. Where on the surface of earth is the angle of dip zero?

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  10. The horizontal component of the earth's magnetic field at a place is B...

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  11. At a place, the horizontal component of earth's magnetic field is B an...

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  12. The vertical component of earth's magnetic field at a place is sqrt3 t...

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  13. What does the Gauss theorem in magnetism establish ?

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  14. The permeability of a magnetic material is 0.9983. Name the type of ma...

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  15. Which of the following substances are diamagnetic ? Bi , Al , Na , ...

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  16. Which of the following substances are paramagnetic ? Bi, Al, Cu, Ca...

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  17. What are permanent magnets 2 Give one example.

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  18. How does the magnetisation vector of a paramagnetic sample vary with t...

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  19. The susceptibility of a magnetic material is 1.9 xx 10^(-5). Name the ...

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  20. The susceptibility of a magnetic material is - 4.2 xx 10^(-6). Name th...

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