MDCAT Physics MCQ #767

A coil is placed in a magnetic field. The magnetic flux linked with the coil is Φ = 2t^2 + 3t - 1. The induced emf at t = 1s is?

MDCAT Physics MCQ #767

  1. Question 1

    Q1. A coil is placed in a magnetic field. The magnetic flux linked with the coil is Φ = 2t^2 + 3t - 1. The induced emf at t = 1s is?

    • A) 7 V
    • B) -7 V
    • C) 5 V
    • D) -5 V

    Answer: -7 V

    Explanation: ε = -dΦ/dt = -(4t + 3) at t=1, ε = -7 V. Option A fails because it lacks the negative sign.