Question

What is Lenz Law Byju's?

Answer 1

Lenz's Law, as explained by BYJU'S or other educational platforms, refers to a principle in electromagnetism that describes the direction of an induced current in a conductor. It states that the direction of the induced current will always oppose the change in magnetic flux that caused it.

Simple Breakdown:

1. Magnetic Flux: This is the amount of magnetic field passing through a given area.
   

1. Induced Current: When there is a change in the magnetic flux (due to movement of a magnet or a change in current), it induces a current in a conductor, like a wire.
   

  

Lenz's Law:

1. It says that the induced current will flow in such a direction that it creates a magnetic field that opposes the change in the original magnetic flux.
   

  

Example:

Imagine you have a coil of wire and you move a magnet toward it. As the magnet approaches, the magnetic flux through the coil increases. According to Lenz’s Law, the coil will generate an induced current that creates a magnetic field which opposes the approach of the magnet. If you pull the magnet away, the induced current will flow in the opposite direction to try to resist the decrease in magnetic flux.

This law is a consequence of the conservation of energy, ensuring that energy is not created or destroyed in the process. The induced current generates its own magnetic field, which works against the change in the original magnetic field.

It’s an important concept in understanding electromagnetic induction and is used in devices like electric generators, transformers, and motors.