PhysicsCode 5054

Electromagnetic induction

What this topic asks you to be able to do

  • Describe a practical investigation that shows electromagnetic induction in action
  • State that an induced e.m.f. has a magnitude that depends on: (a) the rate at which the magnetic field changes or at which magnetic field lines are cut (b) how many turns the coil has
  • State and use Lenz’s law: the current produced by an induced e.m.f. has an effect that opposes the change producing it; describe a way of demonstrating this law