when does the magnetic moment is negative? please explain Share with your friends Share 0 Aarushi Mishra answered this Dear studentMagnetic moment is a vector directed from -q to +q. A vector is negative with respect to a fixed direction. e.g. If we consider upward direction as positive then aceleration due to gravity is taken as negative. Similarly, if you take right hand side direction as positive and then keep +q on left side of-q. Then, dipole moment will be directed towards left, hence it will be negative. 1 View Full Answer