Explain the intermittent reinforcement schedules in your own words

In behaviorism, Intermittent Reinforcement is a conditioning schedule in which a reward or punishment (reinforcement) is not administered every time the desired response is performed. ... On an intermittent reinforcement schedule the mouse would only receive food every few times (it is typically random and unpredictable).

the amount of current in the coil

the higher the current the higher the mag field around it the higher the influence on the compass