engineering physics MCQ #69

In an AC circuit, the current lags behind the voltage by π / 4 rad. The circuit contains

engineering physics MCQ #69

  1. Question 1

    Q1. In an AC circuit, the current lags behind the voltage by π / 4 rad. The circuit contains

    • A) only resistance
    • B) resistance and inductance
    • C) resistance and capacitance
    • D) only capacitance

    Answer: resistance and inductance

    Explanation: Current lags voltage in an inductive circuit. Phase difference is given by tan(π / 4) = ωL / R, indicating presence of L and R.