1. The problem statement, all variables and given/known data Which two of the three types of fields in the title of this are thread are the most similar? Provide supporting evidence? 2. Relevant equations Gravitational: -Source: point mass -Field intensity proportional to: M/r^2 -Range: long range -Strength: weak -Direction of field lines: toward center of mass Electric Fields: -Source: point charge -Field intensity proportional to: Q/r^2 -Range: short range -Strength: strong -Direction of field lines: toward center of charge Magnetic Fields: -Source: no point source, dipole required -Field intensity proportional to: n/a because no point source -Range: short range -Strength: strong -Direction of field lines: depends on the direction of the motion of a charge generating the magnetic field lines. otherwise they go from north to south. 3. The attempt at a solution I think that gravitational and electric fields have more in common, but I think this is a subjective question. Even so I'm not quite sure so I was wondering if anyone could tell me otherwise. It would be of much help in understanding these three fields. Here's my reasoning for gravitation and electric: They both have a point source, and with this point source they both have a field intensity that is proportional based on the inverse square law. Both exert force from a distance with no contact. The field strength of both is also determined by the unit property of the object causing the force (i.e. mass or charge) However here are also some major differences: -gravitational can only attract while electric can attract and repel -you can't shield yourself from gravitational force, but you can from an electric force with insulation, etc. Anyways that's my reasoning but I was wondering if electric fields and magnetic fields have more in common in terms of number of similar characteristics. For example they both have a short range yet strong strength of force, and their field diagrams involve curvature (when an electric field involves opposite charges). Help please, is there an objective answer?