A coil is placed in a changing magnetic field and an emf is induced.What happens to the induced emf if the rate of change of magnetic field doubles?
A) The emf quadruples.
B) The emf increases by a factor of 16.
C) There is no change.
D) The emf doubles.

Question

Quizplus · Accepted Answer

According to Faraday's Law of Electromagnetic Induction, the magnitude of the induced emf is directly proportional to the rate of change of the magnetic field. Therefore, if the rate of change of magnetic field doubles, the induced emf also doubles.

A Coil Is Placed in a Changing Magnetic Field and an Emf