A rotor includes a rotor core; and first and second permanent magnets arranged in the core such that each of the first magnets corresponds to one of the second magnets and, on a cross-sectional plane of the rotor core perpendicular to a rotation axis thereof, a first line passing through the first magnet and a second line passing through the second magnet meet at a point pointing toward the rotation axis. The first and second magnets are arranged such that a straight line interconnecting the rotation axis and the point is interposed therebetween, an angle of the first magnet relative to the straight line being smaller than that of the second magnet relative to the straight line, and a width of the first magnet in the direction parallel to the first line being smaller than that of the second magnet in the direction parallel to the second line.