1. We will be in Read Only mode (no new threads, replies, registration) for several hours as we migrate the forums to upgraded software.

questions about self/mutual induction

Discussion in 'Physics' started by logicman112, Dec 27, 2008.

  1. logicman112

    Thread Starter Active Member

    Dec 27, 2008
    We have a regular wire or coil in a circular shape and a permanent magnet is moved in and out of the circle to produce a variable magnetic flux and eventually to induce voltage and current into the circle. The magnetic field density by the permanent magnet is named B1.
    Is this induced current makes a new magnetic filed named B for example?
    What is the total flux passing through the circle? Is it resulted from the magnet alone or from both magnet and the magnetic field from the induced current(B)? Are the two magnetic field intensity vectors(B and B1) effective on the charges of the circle?
  2. mik3

    Senior Member

    Feb 4, 2008
    -The induced current creates another magnetic field

    -The total flux through the coil is the resultant flux of both the magnet and the coils flux (caused by the induced current).

    -Both vectors are effective.