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Expression for the change in magnetic fux for a loop of varying area and B.

  1. Mar 3, 2010 #1
    the expression for the magnetic flux changing area is :
    change in m.flux=B.dA
    and for varying magnetic field
    change in m.flux=dB.A
    but for when the both is changing then what will the expression
  2. jcsd
  3. Mar 3, 2010 #2


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    Science Advisor
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    Hi waqarrashid33! :smile:

    If the magnetic flux across a surface is B.A, then just apply the chain rule …

    d(B.A) = B.dA + dB.A :wink:
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