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Moving a conducting rod in a magnetic field

  • #1

Homework Statement


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A small conducting rod of length l moves with a uniform velocity v in a uniform magnetic field B. Explain how the end Y becomes positively charged.

Homework Equations




The Attempt at a Solution


I know the concept, a force will act on the conductor which will push the electrons , and the end where electrons will be deficit will have positive charge. But I can't understand how to find the direction of force........I feel that the direction of induced current is also required. Please help me out !!![/B]
 

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Answers and Replies

  • #2
nrqed
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Homework Statement


View attachment 225965
A small conducting rod of length l moves with a uniform velocity v in a uniform magnetic field B. Explain how the end Y becomes positively charged.

Homework Equations




The Attempt at a Solution


I know the concept, a force will act on the conductor which will push the electrons , and the end where electrons will be deficit will have positive charge. But I can't understand how to find the direction of force........I feel that the direction of induced current is also required. Please help me out !!![/B]
Think of the electrons inside the rod. You know the direction of their velocity so you can determine the direction of the magnetic force on them.
 
  • #3
Oh yes ! Now i get it.........
Thanks nrqed
 

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