The field due to a magnet at a distance `R~ from the centre of the magnet is proportional

The magnetic field on the axis at a distance z from the centre of the bar magnet would be ?

The magnetic field on the axis at a distance z from the centre of the bar magnet would be ?

The electric field due to a dipole at a distnce r from its centre is proportional to

In which direction, the magnetic field on the axis at a distance z from the centre of the bar magnet would be ?

The magnetic field due to a current carrying circular coil on the axis, at a large distance r from the centre of the coil, varies approximately as ..........

Magnetic field due to a ring having n turns at a distance x on its axis is proportional to (if r = radius of ring)

Magnetic field due to a ring having n turns at a distance x on its axis is proportional to (if r = radius of ring)