According to an embodiment of the present invention, head/disk contact events are determined through a measurement of current at the head disk interface. For example, an ammeter/voltage source component may be electrically coupled to a magnetic/slider of a disk drive as well as to a spindle coupled to the recording medium. Applied voltage to the slider may result in a lower flying height. Greater measured current by the ammeter could indicate head/disk contact and assist in adjusting applied voltage to obtain a desire flying height.