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

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

The magnetic moment of a length 10 cm and pole strength 4.0 Am will be

A magnet of length 0.1 m and pole strength 10^(-4) A.m. is kept in a magnetic field of 30 Wb//m^(2) at an angle 30^(@) . The couple acting on it is …xx10^(-4)Nm .

A magnet of length 0.1 m and pole strength 10^(-4) A.m. is kept in a magnetic field of 30 Wb//m^(2) at an angle 30^(@) . The couple acting on it is …xx10^(-4)Nm .

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 .

The coupl acting on a bar magnet of pole strength 2 Am when kept in a magnetic field of intensity 10 A//m , such that axis of the magnet makes an angle 30^(0) with the direction of the field is 80xx10^(-7)Nm . The distance between the poles of the magnet is