engineering physics MCQ #1219

The magnetic flux linked with a coil is given by φ = 5t² + 2t + 3. Induced emf at t = 1 s is

engineering physics MCQ #1219

  1. Question 1

    Q1. The magnetic flux linked with a coil is given by φ = 5t² + 2t + 3. Induced emf at t = 1 s is

    • A) 10 V
    • B) 12 V
    • C) 15 V
    • D) 20 V

    Answer: 12 V

    Explanation: Induced emf = -dφ/dt = -(10t + 2), at t = 1 s, emf = -12 V.