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Homework Help: Problems concerning magnetic fields, induced current, emf

  1. Apr 1, 2005 #1
    I been trying to work out these problems for the past two days but cannot come up with a solution. If anyone can help that would be greatly appreciated.

    1) A 3.80-g bullet moves with a speed of 180m/s perpendicular to the Earth’s magnetic field of 5.00 X 10-5 T. If the bullet possesses a net charge of 8.10 X 10-9 C, by what distance will it be deflected from it’s path do to it’s magnetic field after it has traveled 1.00 km?

    2) A galvanometer needle deflects full scale for a 63.0-μA current. What current will give full-scale deflection if the magnetic field weakens to 0.860 of its original value?

    3) (a) If the resistance of the resistor in the figure is slowly increased, what is the direction of the current induced in the small circular loop inside the larger loop? (b) What would it be if the small loop were placed outside the larger one, to the left?

    Attached Files:

  2. jcsd
  3. Apr 2, 2005 #2
    Anyone have any ideas?
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