Hi Guys, This is my first post here. I am preparing for the EIT exam in October. I came across this practice problem during my review. Question: The circuit shown has a power factor of 0.8. What size capacitor must be added to this circuit to correct the power factor to 0.9? (A) 10 kVAR in series (B) 10 kVAR in parallel (C) 13 kVAR in series (D) 13 kVAR in parallel It is easily calculated that the needed reactive power is ~13kVAR. However,the questions is about how to connect it: series or parallel. I think 13kVAR shall be connected in parallel to ensure that the existing load still draws 50kW at 0.8pf (by maintaining the terminal voltage, given the load is a constant impedance). However, the answer provided is (C). I can see the point of choosing (C) if the load is a constant KVA load. But if this is true, (D) is also a a correct answer isn't it? Let me know what you guys think.