Which of the following is not correct about the Biot-Savart’s law?
1
The magnitude of the magnetic field is directly proportional to the current through the conductor.
2
The magnitude of the magnetic field is directly proportional to the length of the current element.
3
The magnitude of the magnetic field is directly proportional to the square of the distance from the current element.
4
The magnitude of the magnetic field is inversely proportional to the square of the distance from the current element