Actively controlling ESI voltage on an object such as a magnetic storage disk (12), a rotating MR head, or insulator, includes the method and system for actively monitoring (92) a generated ESI voltage on the object (12). The method and system generate (100, 102, and 104) a signal responsive to the generated ESI voltage. Then, an opposing ESI voltage is produced (76) from the responsive signal. The method and system then apply the opposing ESI voltage (76) to the object (12) for opposing and controlling the generated ESI voltage.