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Physics magnetism

  1. May 11, 2013 #1
    1. The problem statement, all variables and given/known data

    http://upload.lsforum.net/users/public/c7843Untitleda235.jpg

    when the switch is closed
    what happen to the golden ring when the switch is closed? explain

    the switch remains closed. what happen to the ring if the slide contact of the rheostat
    i) is kept at A
    ii) moves from A to B
    iii) oscillates to and fro between A and B continuously with 1 Hz ?

    explain the aboves

    2. Relevant equations
    it is a theorem about induced current


    3. The attempt at a solution
    i am wondering when it contact at A the resistance decreases, so the current increases of circuit, then y the golden ring remain stationary?
     
    Last edited: May 11, 2013
  2. jcsd
  3. May 11, 2013 #2
    You must fill out #2 and #3 or we will not assist you.
     
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