MDCAT Physics MCQ #760

The magnetic flux linked with a coil is given by Φ = 5t^2 + 2t + 3. The induced emf at t = 2s is?

MDCAT Physics MCQ #760

  1. Question 1

    Q1. The magnetic flux linked with a coil is given by Φ = 5t^2 + 2t + 3. The induced emf at t = 2s is?

    • A) 22 V
    • B) -22 V
    • C) 20 V
    • D) -20 V

    Answer: -22 V

    Explanation: ε = -dΦ/dt = -(10t + 2) at t=2, ε = -22 V. Option A fails because it lacks the negative sign.