engineering physics MCQ #1245

The magnetic flux linked with a coil is ϕ = 2t³ + t² + 1. Find induced emf at t = 1 s.

engineering physics MCQ #1245

  1. Question 1

    Q1. The magnetic flux linked with a coil is ϕ = 2t³ + t² + 1. Find induced emf at t = 1 s.

    • A) 7 V
    • B) 8 V
    • C) 5 V
    • D) 6 V

    Answer: 8 V

    Explanation: ε = -dϕ/dt = -(6t² + 2t) = -8 V at t = 1 s. Magnitude is 8 V.