MDCAT Physics MCQ #776

A rectangular coil with 50 turns, area 0.1 m^2 is rotated from a position perpendicular to a 0.2 T magnetic field to a position parallel to the field in 0.05 s. What is the average induced EMF?

MDCAT Physics MCQ #776

  1. Question 1

    Q1. A rectangular coil with 50 turns, area 0.1 m^2 is rotated from a position perpendicular to a 0.2 T magnetic field to a position parallel to the field in 0.05 s. What is the average induced EMF?

    • A) 4 V
    • B) 8 V
    • C) 12 V
    • D) 20 V

    Answer: 20 V

    Explanation: Average induced EMF = N*dΦ/dt = 50*(0.2*0.1 - 0)/0.05 = 20 V. Option A fails due to incorrect flux change.