A current I flows in a conductor placed perpendicular to the plate of the paper. Indicate the direction of the magnetic field due to a small element `dvecl` at point P situated at a distance `vecr` from the element as shown in the figure.

State Biot Savart's law. A current I flows in a conductor placed perpendicular to the plane of paper. Indicate the direction of the magnetic field due to a small element dvecl at a point P at a distance vecr from the element as shown in figure.

The magnetic field dvecB due to a small current element dvecl at a distance vecr and element carrying current i is,

figure 4.22 shows two long wires A and B, each carrying a current I, separated by a distance l and oriented in a plane perpendicular to the plane of paper. The directions of currents are shown in figure. Find the magnetic induction at a point P located at a distance l from both wires as shown in figure4.22

The magnetic field bar(dB) due to a small current element bar(dl) at a distance vec(r) and carrying current 'I' is

An electric current flows in a wire from north to south. What will be the direction of the magnetic field due to this wire at a point.

The magnetic field strength at a point P distant r due to an infinite straight wire carrying a current i is as shown in the figure

The magnetic field at the origin due to a current element I (vec dl ) placed at a positon (vec r) is

The magnetic field (d vecB) at a point due to an elemental conductor (d vecl) carrying a current (i) at a distance (vecr) from the elemetn, is given by