Question
Fri February 20, 2009 By:

please explain the magnetic field due to a circular loop carrying current usin biot savart law

Expert Reply
Sat February 21, 2009

Field at Center of Current Loop

The form of the magnetic field from a current element in the Biot-Savart law becomes

which in this case simplifies greatly because the angle =90 ° for all points along the path and the distance to the field point is constant. The integral becomes

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