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

Thread starter waqarrashid33
Start date Mar 3, 2010
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Area Change Expression Loop Magnetic

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The expression for magnetic flux change in a loop with varying area is given by the formula change in magnetic flux equals B times dA. For a varying magnetic field, the change in magnetic flux is expressed as dB times A. When both the area and the magnetic field are changing, the total change in magnetic flux can be derived using the chain rule. This results in the equation d(B.A) = B.dA + dB.A. Understanding these relationships is crucial for analyzing electromagnetic systems.

Mar 3, 2010

waqarrashid33

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

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Mar 3, 2010

tiny-tim

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Hi waqarrashid33!

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

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

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