engineering physics MCQ #943

The current in a wire varies with time as I = 2t + 1. The charge passed in 2 s is?

engineering physics MCQ #943

  1. Question 1

    Q1. The current in a wire varies with time as I = 2t + 1. The charge passed in 2 s is?

    • A) 4 C
    • B) 6 C
    • C) 8 C
    • D) 10 C

    Answer: 6 C

    Explanation: Q = ∫I dt from 0 to 2 = ∫(2t+1) dt = [t² + t] from 0 to 2 = (4+2) - (0+0) = 6 C.