engineering physics MCQ #1218

A coil of 100 turns is rotated in a magnetic field, inducing an emf of 10 V. If rotation rate doubles, induced emf becomes

engineering physics MCQ #1218

  1. Question 1

    Q1. A coil of 100 turns is rotated in a magnetic field, inducing an emf of 10 V. If rotation rate doubles, induced emf becomes

    • A) 5 V
    • B) 10 V
    • C) 20 V
    • D) 40 V

    Answer: 20 V

    Explanation: Induced emf is directly proportional to rate of change of flux, hence doubling rotation rate doubles induced emf.