Ohms can be resistance or impedance. Impedance is like resistance, except it applies only to an alternating current. A coil is simply a winding of wire, with or without a core. The wire will offer very little resistance to direct current or low frequency current, but its impedance will increase as the frequency of the alternating current goes up. 60 ohms of resistance would take a pretty long piece of wire, but 60 ohms of impedance could be very small physically, depending on presence or absence of a core (an actuator would normally be cored), number of turns and frequency of current. This is hardly a simple answer, but it's a lot simpler than a course in AC electricity.