Question

derive biot savart law​

Answer 1

Answer:

according to biot-savart's law magnetic field at a point dB due to a current carrying element dl is

1. directly proportional to strength of the current ,I
2. directly proportional to length of the current carrying element , do
3. directly propose to sine of the angle between the direction of the current and the line joining midpoint of a current-carrying element two point P .and
4. inversely proportional to square of the distance between the current carrying element and point P ,r^2

See attachment for derivation!!!