According to Lenz’s law:-The polarity of the induced emf is such that it tends to produce induced current in such a direction that it opposes the change in magnetic flux that produced it.

The (-) ive sign in given equatione= (-)(dΦ/dt)tells about the direction.

According to Faraday’s law whenever there is change in the magnetic flux, emf is induced, as aresult there will be induced current.

According to Lenz’s law the direction of the induced current will be such that it opposes the change in the magnetic flux.

For example:-

Consider a circuit where the magnetic flux is increasing, as a result flux will change and which induces the emf in the circuit, and as a result current will be induced in the circuit.

The direction of the induced current will be such that it will oppose the cause which induced it.

The induced current will be in such a direction that it decreases the magnetic flux.

Note: - The induced current will try to oppose the change which is producing it.

how this related to conservation of energy