Question

what is the dot product of magnetic field (B) and elementary length (dl) equal to ?​

Answer 1

Answer:

u(mu).I(current in loop)

amperes loop law,

integeration of B.dl = u(magnetic permeability).i(current inside the loop)

it is developed for easy calculation of magnetic fied instead of long integeration and derivatives

,does not give pure result because all current carrying wire is considered at centre of loop.

Answer 2

Explanation:

Here is your answer

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