Magnetic torquer
or torque rod are essentially sets of electromagnets that are laid out to create a
magnetic field that interfaces with an ambient magnetic field, so that the
counter-forces produced is a stronger magnetic force. In addition, its magnetic
field strength increases with the current due to the rod that has field lines
pointing in the same direction, closed together and nearly parallel with uniformly
spaced. This set up indicates that the field of a torque rod produced powerful
magnetic field than a torque coil.
