How can you show that the magnetic field produced by a given electric current in the wire decreases as the distance from the wire increases?

A magnetic field can be produced by

The direction of magnetic field produced on passing electric current in a conductor is determined by

Discuss Oersted's experiment to establish that magnetic field is produced due to current in a wire.

Write an expression for the magnetic field produced by an infinitely long straight wire carrying a current I, at a short perpendicular distance a from itself.

Two long straight parallel wieres are 2m apart, perpendicular to the plane of the paper. The wire A carries a current of 9.6 A, directed into the plane of the paper. The wire B carries a current such that the magnetic field of induction at the point P, at a distance of 10/11 m from the wire B, is zero. find the magnitude of the magnetic field of induction of the pont S.

Explain Biot-Savart law for the magnetic field produced at a point due to the current flowing in a current element. How will you determine the direction of the field?

Two long straight, current-carrying conductors , PQ and XY, are held a constant distance apart as shown in the figure. The conductors carry the magnitude of current in the same direction . A plan view form above the conductors is shown in the figure. Draw arrows, one in each case, to show the direction of the magnetic field at Q due to the current in wire XY. the force at Q as a result of the magnetic field due to the current in wire XY.