Understanding Lenz's Law

What happens to the magnetic flux linkage when a magnet is moved next to a coil?

• It changes, inducing an emf.

• It decreases.

• It remains constant.

• It disappears completely.

According to Lenz's Law, what is the direction of the induced current?

• It enhances the change producing it.

• It follows the direction of the magnetic field.

• It opposes the change producing it.

• It is random and unpredictable.

What rule is used to determine the direction of the magnetic field in a solenoid?

• Left-hand rule

• Right-hand rule

• Ampere's rule

• Fleming's rule

Why is energy conserved when a magnet is moved towards a coil?

• Because the coil absorbs all the energy.

• Because the magnet loses energy.

• Because the work done on the magnet equals the electrical energy produced.

• Because the magnet is attracted to the coil.

What would happen if the north pole of the magnet was replaced with a south pole?

• Energy would not be conserved.

• The direction of the induced current would flip.

• The direction of the induced current would remain the same.

• The magnet would be attracted to the coil.