A current element `3dl` is at `(0,0,0)` along y-axis. If `dl=1cm`, find the magnetic field at a distance `20cm` on the x-axis.

A current l is flowing through a long straight solid conductor of radius R = 4 cm. Magnetic field at a distance 2 cm from the axis of conductor is B_0 The distance from the axis, where magnetic field is 1.5 B_0 is (current density is uniform)

A current l is flowing through a long straight solid conductor of radius R = 4 cm. Magnetic field at a distance 2 cm from the axis of conductor is B_0 The distance from the axis, where magnetic field is 1.5 B_0 is (current density is uniform)

A short magnetic dipoles has magnetic moment 0.5 Am^2 . Calculate its magnetic field at a distance of 20cm from the center of magnetic dipole on the axis.

A long straight wire carrying current i=10A lies along y-axis. Find the magnetic field at P(3cm, 2cm,4cm).

A long straight wire carrying current i=10A lies along y-axis. Find the magnetic field at P(3cm, 2cm,4cm).

A long conducting wire of radius 1 cm carrying current of 1 A placed with its axis coinciding with X-axis. Find the magnetic field at point having coordinates (0.5 cm, 0.5 cm ) .

An element Deltavecl=Deltaxhati is placed at the origin as shown in figure and carries a current I=2A . Find out the magnetic field at a point P on the y-axis at a distance of 1*0m due to the element Deltax=1cm . Give also the direction of the field produced.