Lenz's law states that the direction of an induced current is such that it

Explanation

The induced current sets up a field that opposes the flux change, so pushing a north pole towards a coil induces a current making the near face a north pole, which resists the approach. This opposition is why work must be done to move the magnet, and that work is the source of the electrical energy produced. Lenz's law is therefore conservation of energy applied to induction.