Question

write using biot-savart's law the expression for the magnetic field B due to an element dL carrying current I at a distance r from it in a factor from. Hence derive the expression for the magnetic field due to a current carrying loop of radius R at a point P and a distance x from its Centre along the axis of the loop​

Answer 1

Biot Savarts Law and it's applications.

There are 3 application but only 2 I have uploaded because of upload limit of this app.

If you want it's 3rd application then ask the new question into this app.