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Homework question electricity

  1. Mar 13, 2005 #1

    out of 23 homework questions i found this difficult. can anyone help please.

    Q22. Two coils A and B are made around two tubes. Each has teh same number of turns of wire and is the same size. A soft iron bar is placed inside each tube.

    (a)The same currect is passed through A and B. what happens?
    (b) The current through A is reversed to that in B. What happens?

    thank you

  2. jcsd
  3. Mar 13, 2005 #2


    User Avatar

    (a) If the same current is passed then the flux produced

    (b) The magnetic poles of the solenoid is reversed.

    I think lol

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