RC Circuit Phase Difference Trick 🔥 | AC Concept
❓ Concept Question In an RC AC circuit , how do we determine the phase difference between voltages and how is it related to frequency? 🖼 Concept Image ✍️ Short Concept In AC circuits, resistors and capacitors behave differently with respect to phase . Understanding their phase relation helps determine frequency conditions . 🔷 Step 1 — RC Circuit Basics 💯 In AC circuits: Resistor: Current and voltage are in phase . Capacitor: Current leads voltage by 90° . So phase difference naturally appears in RC networks. 🔷 Step 2 — Voltage Across R and C Across resistor: V R V_R is in phase with current . Across capacitor: V C V_C lags current by 90° . 👉 That means V R V_R and V C V_C are perpendicular in phasor diagram. 🔷 Step 3 — Special Phase Difference Condition If question says: Phase difference = 90° That means resistive and capacitive effects are balanced . Mathematically this leads to a special condition involving frequency. 🔷 Step...