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yrelhan4

a wire is bent as a parabolic curve kept in x-y plane. the curve can be described by the equation x^2=6y. if a uniform magnetic field B=2*10^-3 k tesla (positive z direction) is applied, force experienced by the wire is nearly?

  • one year ago
  • one year ago

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  1. yrelhan4
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    oops. the wire carries a current i=2A

    • one year ago
  2. shubhamsrg
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    length ?

    • one year ago
  3. yrelhan4
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    |dw:1359707566710:dw|

    • one year ago
  4. shubhamsrg
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    So the wire extends from (-6,6) to (6,6) only right ?

    • one year ago
  5. yrelhan4
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    we dont know the x coordinates.

    • one year ago
  6. shubhamsrg
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    Oh am sorry, I don't know why assumed the height to be 6, nevermind.

    • one year ago
  7. shubhamsrg
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    Okay, so the working formula is F = iBl

    • one year ago
  8. shubhamsrg
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    Where are you stuck ?

    • one year ago
  9. yrelhan4
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    what should be l? or i always use idl * b. dl here..

    • one year ago
  10. shubhamsrg
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    l = distance between 2 ends of wire.

    • one year ago
  11. yrelhan4
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    we should have x coordinates then?

    • one year ago
  12. shubhamsrg
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    nopes. distance between the ends is already given right,

    • one year ago
  13. shubhamsrg
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    |dw:1359708383481:dw|

    • one year ago
  14. shubhamsrg
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    Is that 6 ? or the co-ordinate on y axis (0,6) ?

    • one year ago
  15. yrelhan4
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    coordinate on y axis.

    • one year ago
  16. shubhamsrg
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    I see, then use the given eqn, find co-ordinates of x, as I said before, they should come out to be (-6,6) and (6,6)

    • one year ago
  17. yrelhan4
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    ohho.. ok. damn. it was easy. :P thank you.

    • one year ago
  18. shubhamsrg
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    you should also be able to find out direction of force, can you tell me what will that be ?

    • one year ago
  19. yrelhan4
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    -j?

    • one year ago
  20. shubhamsrg
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    Yep, ^_^

    • one year ago
  21. yrelhan4
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    hmm. thank you. :)

    • one year ago
  22. shubhamsrg
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    Note that direction of force is different at different points on the force, -j is the direction of net force. Anyways, glad to help.

    • one year ago
  23. shubhamsrg
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    different at different points of the wire*

    • one year ago
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