A magnetic dipole placed in two perpendicular magnetic fields `vec(B)` and `vec(B)_(o)` is in equilibrium making an angle `theta` with `vec(B)` then.

A magnetic dipole is placed in two perpendicular magnetic field B and B_0 and is in equilibrium making angle theta with vecB . Then :

Tangent law is applicable to a dipole placed in two magnetic field vec(B) and vec (Bo) when

Tangent law is applicable to a dipole placed in two magnetic fields vecB and vec(B_0) when :

If vec(A) and vec(B) are perpendicular then vec(A) . vec(B)= . . . .

A conducting circular loop of radiius r carries a constant current i . It is placed in a uniform magnetic field vec(B)_(0) such that vec(B)_(0) is perpendicular to the plane of the loop . The magnetic force acting on the loop is

A conducting circular loop of radiius r carries a constant current i . It is placed in a uniform magnetic field vec(B)_(0) such that vec(B)_(0) is perpendicular to the plane of the loop . The magnetic force acting on the loop is