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ajprincess

  • 2 years ago

Plzz help A wire of 1m long carries a current of 10A and makes an angle of 30degrees with the uniform magnetic field B=1.5T. Calculate the magnitude and the direction of the force on the wire.

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  1. ajprincess
    • 2 years ago
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    |dw:1337316891433:dw| Am I right?

  2. timo86m
    • 2 years ago
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    I think you are right let me double check

  3. ajprincess
    • 2 years ago
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    ha k

  4. timo86m
    • 2 years ago
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    IL X B so it is ILB Sin(theta) so yes :)

  5. ajprincess
    • 2 years ago
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    Vat abt the direction? :)

  6. timo86m
    • 2 years ago
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    I think it will point into the screen let me check tho

  7. experimentX
    • 2 years ago
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    force will always be perpendicular to the plane containing the direction of magnetic field and the wire.

  8. timo86m
    • 2 years ago
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    but either way it will be perpendicular to both the Length of the wire and B

  9. timo86m
    • 2 years ago
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    |dw:1337272230240:dw| I think this is how it will look. At least in my mind.

  10. timo86m
    • 2 years ago
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    In that pic the force points away from screen.

  11. timo86m
    • 2 years ago
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    use right hand rule|dw:1337272446404:dw| think of your knuckles as L and tip of fingers as B and F is where your thumb points too. Sorry about drawing :P

  12. timo86m
    • 2 years ago
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    |dw:1337272618747:dw|

  13. ajprincess
    • 2 years ago
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    V need to use right hand rule or fleming's left hand rule? I remember that in the right hand rule the thumb points towards the direction of the current. Am I right? am nt sure?

  14. timo86m
    • 2 years ago
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    depends on situation

  15. experimentX
    • 2 years ago
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    these are all derivative of vector multiplication ...

  16. timo86m
    • 2 years ago
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    qVxB|dw:1337272984176:dw|

  17. timo86m
    • 2 years ago
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    qVxB the first term always curls into the second term Then use right hand rule Knuckles is first term, tip of fingers is second term and thumb is the product (force)

  18. ajprincess
    • 2 years ago
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    oh k. In both ways of u guys @timo86m and @experimentX and in my way the answer comes as the same

  19. timo86m
    • 2 years ago
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    Well you have to use your formula either way Sin(theta) *ILB but you need IL x B to know that L curls into B :)

  20. ajprincess
    • 2 years ago
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    Thanxxxx for the help.:)

  21. timo86m
    • 2 years ago
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    :D

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