MDCAT Physics MCQ #786

The magnetic flux through a 200-turn coil is given by Φ = (t^2 + 2t + 1) Wb. What is the induced EMF at t = 1 s?

MDCAT Physics MCQ #786

  1. Question 1

    Q1. The magnetic flux through a 200-turn coil is given by Φ = (t^2 + 2t + 1) Wb. What is the induced EMF at t = 1 s?

    • A) 400 V
    • B) 600 V
    • C) 800 V
    • D) 1000 V

    Answer: 800 V

    Explanation: dΦ/dt = (2t + 2) Wb/s, at t = 1, dΦ/dt = 4 Wb/s. Induced EMF = N*dΦ/dt = 200*4 = 800 V. Option A fails due to wrong differentiation.