engineering physics MCQ #1251

The magnetic flux linked with a coil is given by ϕ = t² + 2t + 1. Find induced emf at t = 2 s.

engineering physics MCQ #1251

  1. Question 1

    Q1. The magnetic flux linked with a coil is given by ϕ = t² + 2t + 1. Find induced emf at t = 2 s.

    • A) 6 V
    • B) -6 V
    • C) 4 V
    • D) -4 V

    Answer: 6 V

    Explanation: ε = -dϕ/dt = -(2t + 2) = 6 V at t = 2 s.