MDCAT Physics MCQ #777

The magnetic flux through a 100-turn coil is given by Φ = (2t^2 + 3t + 1) Wb. What is the induced EMF at t = 2 s?

MDCAT Physics MCQ #777

  1. Question 1

    Q1. The magnetic flux through a 100-turn coil is given by Φ = (2t^2 + 3t + 1) Wb. What is the induced EMF at t = 2 s?

    • A) 900 V
    • B) 1000 V
    • C) 1100 V
    • D) 1200 V

    Answer: 1100 V

    Explanation: dΦ/dt = (4t + 3) Wb/s, at t = 2, dΦ/dt = 11 Wb/s. Induced EMF = N*dΦ/dt = 100*11 = 1100 V. Option A fails due to wrong differentiation.