The magnetic field at a distance `x` on the axis of a circular coil of radius `R` is `1/8th` of that at the centre. The value of x is

The magnetic field at a distance X from the centre, on the axis of a circular coil of radius R is 1/27 th of that at the center. The value of X is

The magnetic field at a distance X from the centre, on the axis of a circular coil of radius R is 1/27 th of that at the center. The value of X is

If B_1 is the magnetic field induction at a point on the axis of a circular coil of radius R situated at adistance R sqrt 3 and B_2 is the magnetic field at the centre of the coil, then ratio of B_1/B_2 is equal to

Considering magnetic field along the axis of a circular loop of radius R , at what distance from the centre of the loop is the field one eighth of its value at the centre ?

The magnetic fields at two points on the axis of a circular coil at distance of 0.05 m and 0.2 m from the centre are in the ratio 8 : 1 . The radius of the coil is

Show that the magnetic field along the axis of a current carrying coil of radius r at a distance x from the centre of the coil is smaller by the fraction 3x^2//2r^2 than the field at the centre of the coil carrying current.

Magnetic field B on the axis of a circular coil and far away distance x from the centre of the coil are related as :