Shinji's rоbоt becоmes disconnected from externаl power, so the robot's mаssive bаckup battery switches on. It has a small amount of internal resistance as modeled in the figure below. Points "a" and "b" connect to the rest of the robot, allowing current to flow in and out. If at some instant a voltage of 9MV is measured across points "a" and "b", how much current is being output by the battery at that moment?