engineering physics MCQ #66

The voltage across a capacitor is given by V = 100 sin(100πt). The capacitive reactance is 50 Ω. The current is

engineering physics MCQ #66

  1. Question 1

    Q1. The voltage across a capacitor is given by V = 100 sin(100πt). The capacitive reactance is 50 Ω. The current is

    • A) 2 sin(100πt + π/2)
    • B) 2 sin(100πt - π/2)
    • C) 2 cos(100πt)
    • D) 2 sin(100πt)

    Answer: 2 sin(100πt + π/2)

    Explanation: I = V/Xc, and current leads voltage by π/2 in a capacitor.