The torque required to keep a magnet of length `10cm` at `45^(@)` to a uniform magnetic field is `sqrt2xx10^(-5)Nm`. The magnetic force on each pole is

The force acting on each pole of a magnet when placed in a uniform magnetic field of 7A//m is 4.2xx10^(-4)N . If the distance between the poles is 10 cm , the moment of the magnet is

The force experienced by a wire of length 10cm kept at an angle of 30^@ to a uniform magnetic field of 0*5T and carrying a current of 6A is

Each pole of magnet of length 20 cm in a magnetic field of induction 0.2 T experiences a force 20 N. The magnetic moment of magnet is

The magnetic field strength at a distance 2m from a magnetic pole is 2xx10^(-7) T.The pole strength of pole is

The couple acting on a magnet of length 10cm and pole strength 15A-m, kept in a field of B=2xx10^(-5) , at an anlge of 30^(@) is

Calculate the torque acting on a magnet of length 20 cm and of pole strength 2 xx 10^(-5) Am , placed in earth's magnetic field of flux density 2 xx 10^(-5) T , when (i) magnet is parallel to the field (ii) magnet is perpendicular to the field .

A bar magnet of magnetic moment 3.0 A-m^(2) is placed in a uniform magnetic induction field of 2xx10^(-5)T . If each pole of the magnet experiences a force of 6xx10^(-4)N , the length of the magnet is

Calculate torque acting on a bar magnet of length 20 cm magnetic dipole moment 4 xx 10^(-6) Am^(2) , which is placed in earth's magnetic field of flux density 2 xx 10^(-5) T , perpendicular to the field .