A magnetic dipole with moment m makes angle θ with a uniform field B. The torque on the dipole has magnitude

1. The torque on a magnetic dipole in a uniform field is τ = m × B. 2. The magnitude is |τ| = mB sin θ, where θ is the angle between m and B. 3. Torque is maximum when m is perpendicular to B (θ = 90°). 4. Torque is zero when m is aligned with B (θ = 0°), the stable orientation. _Source: syllabus Physics Ch 4 "Moving Charges and Magnetism", §4.10_