1. The problem statement, all variables and given/known data A series RL circuit is connected to a 110-V ac source. If the voltage across the resistor is 85 V, find the voltage across the inductor. 2. Relevant equations V = IR 3. The attempt at a solution How does one go about solving this? My intuition tells me that KVL must be satisfied. Therefore, wouldn't the voltage drop just be 110 - 85 = 25V? The answer key states that the answer is 69.82 V. Instead of explaining how to get the solution, can someone perhaps explain how Kirchoff's Voltage Law is different in AC circuits then DC? I can't quite understand why my logic above doesn't work, and the answer isn't 25V.