Question

State lenz's law. A metallic rod held horizontally along east-west direction is allowed to fall under gravity. Will there be an emf induced between its end? Justify your answer.

Answer 1

Lenz's law states that the current induced in a circuit due to a change or a motion in a magnetic field is so directed as to oppose the change in flux and to exert a mechanical force opposing the motion.

Answer 2

Hey!!

The polarity of induced emf is such that it tends to produce a current which opposes the change in magnetic flux that produced it.

Yes, as the magnetic flux due to vertical component of Earth's magnetic field keeps on changing as the metallic rod falls down.

Good luck !!