Notes

Biot-Savart Law…

Biot-Savart Law – Biot-Savart law gives the gives the magnitude of magnetic field at any point due to a current carrying conductor.
According to Biot-Savart law, magnetic field dB at any point P due to a current element IdI is
dB = μ0/4π × I(d1 × r^)/r2 = μ0/4π × I(d1 × r)/r3 = kIdl sinθ/r2 [∵ μ0/4π = k]