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A 0.18m long metal rod is places on some metal rollers in a megnetic

  1. Nov 6, 2013 #1
    A 0.18m long metal rod is places on some metal rollers in a megnetic field directed into the page. When the rod is moved left with a speed of 1.6ms-1, a current of 0.034 A is measured through the 25Ω resistor.
    How would I calculate the voltage when I'm not given the magnetic field strength? V=BvL
     
  2. jcsd
  3. Nov 6, 2013 #2
    help please!
     
  4. Nov 6, 2013 #3
    To find B can I use F=BIL?? and for force I use 9.8(weight force)
     
  5. Nov 6, 2013 #4

    Drakkith

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    Staff: Mentor

    Welcome to PF!

    This appears to be a homework or homework-type question and should be posted in the homework subforum. Doing so will ensure you get the appropriate help from our outstanding staff of homework helpers. (instead of wikipedia surfing armchair scientists like myself)

    Thanks!
     
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