Dipole can mean two things in physics. The first is an "electric dipole" which separates the positive charge from the negative charge. A simple example of this dipole is a pair of electric charges with the same magnitude but with the opposite type of charge (positive and negative) and are separated by a small distance from each other. The second is a "magnetic dipole", a closed circulation of electric current. A simple example is a single loop of wire with electric current flowing through it.