A small current-carrying coil having a megantic moment `p_(m)` is located at the axis of a round loop of radius `R` with current `I` flowing thorough it. Find the magnitude of the vector force applied to the coil if its distance from the centre of the loop is equal to `x` and the vector `p_(m)` coincides in direction with the axis of the loop.

A square loop of wire, edge length a, carries a current i. Compute the magnitude of the magnetic field produced at a point on the axis of the loop at a distance x from the centre.

A small current carrying loop of area A behaves like a tiny magnet of magnetic moment M current in loop is

A circular coil of radius 2R is carrying current 'i' . The ratio of magnetic fields at the centre of the coil and at a point at a distance 6R from the centre of the coil on the axis of the coil is

A circular coil of radius 2 R is carrying current 'i'. The ratio of magnetic fields at the centre of the coil and at a point at a distance 6 R from the the centre of the coil on the axis of the coil is,

A small current-carrying loop is located at a distance r from a long straight conductor with current I . The magnetic moment of the loop is equal to p_(m) . Find the magnitude and direction of the force vector applied to the loop if the vector p_(m) (a) is parallel to the stratight conductor, (b) is oriented along the radius vector r , (c) coincides in direction with the magnetic field produced by the current I the point where the loop is located.