engineering physics MCQ #966

The current density in a wire is 2 A/m². If the wire has a cross-sectional area of 4 m², the current is

engineering physics MCQ #966

  1. Question 1

    Q1. The current density in a wire is 2 A/m². If the wire has a cross-sectional area of 4 m², the current is

    • A) 8 A
    • B) 2 A
    • C) 0.5 A
    • D) 0.25 A

    Answer: 8 A

    Explanation: Current I = J*A = 2*4 = 8 A.