To my understanding, capacitors cause the current to lead the voltage which adds VARS to the circuit and inductors cause the current to lag behind the voltage which removes VARS (in AC circuits). Also, it is my understanding that VARS increase voltage. I work for one of the largest utilities in the nation as a system operator and literally no one I ask can give me a halfway decent answer on this. My questions are the following, How does the current leading the voltage (adding VARS) raise voltage? How does the current lagging the voltage (removing VARS) lower voltage? Why is Reactive Power (VARS) isolated to a specific area of a circuit and is unable to travel freely through the circuit like Real Power (Watts)? What is physically happening in the capacitor that causes current to lead voltage and add VARS? What is physically happening in the inductor that causes current to lag voltage and add VARS? If I'm wrong about any of my assumptions or understanding please call me out on it. Also, if you only know the answer to some of my questions or have any info, please share what you know. I'm very interested in getting any information on any of these topics.