Lenz's Law – On this occasion Yuksinau.co.id will discuss Lenz Legal Materials. The discussion this time includes understanding, Magnetic Flux, statements and experiments. For that we simply refer to the full review below.

Understanding Lenz's Law

Lenz's law is a physical law that reads ” Hit the GGL (Electric Motion Force) that appear on a network, then the direction of the induced current which is trying to resist the change of the magnetic field & rdquo;.

The lenz law is a law created by a physics scientist named Friederick Lenz on 1834. To see the lenz law can be done by experiments using a magnet & electric coil ,when the magnet is in the coil.

But if a magnetic field is brought close to the coil it will cause a change in magnetic flux. The direction of the induction produced on the magnetic change will remain in a constant flux state. But whether if a magnetic field is near or in motion will move away? To be able to see it, let's look at the image below :

Based on the picture above,

• direction of cause of change is direction v.
• the direction v will always be opposite to the direction of the Lorentz FL force a
• by applying the right hand rule, then we will get direction I from P to Q.

The law of lenz can be formulated as follows :

Magnetic Flux

Magnetic flux is the product of the magnetic field and the area of ​​the plane which is positioned perpendicular to the magnetic induction. Flux can be formulated as follows :

In essence the form of magnetic induction will not always be perpendicular to the plane, because magnetic induction can form certain angles( θ ). For example there is an induction of a magnetic field that forms an angle (θ) with a normal line, the magnetic flux value obtained is:

We can use the following formula :

Φ= BA.cosθ

Φ = Magnetic flux
B = Magnetic induction
A = Wide field / broad base
θ = is the direction angle of the magnetic induction and the normal line of the plane

Lenz Law Statement

& ldquo; when GGL (electromotive force) induction appears in a circuit, then the direction of induction is obtained in such a way as to be able to induce an induced magnetic field that opposes changes in the magnetic field”.

In order to understand this law, Look at the picture above. When the position of the magnet and the coil is at rest, then it does not cause a change in the magnetic flux in the coil.

But when the north pole of the magnet is directed toward a coil, it will cause a change in magnetic flux. And it can be concluded that the coil will appear magnetic flux against the addition of magnetic flux that can penetrate into the coil.

Therefore, the direction of the induced flux must be opposite to the magnetic flux. That way the total flux surrounded by the coil will always be in a constant state.

But when the magnet is moved away from the coil, then it can cause a reduction in magnetic flux on the coil, resulting in the coil will arise induction flux that will fight the reduction of magnetic flux, so the total flux will always be in a constant state.

The direction of the induced current can be determined through the rules of the right hand, if the direction of magnetic induction is expressed by the mother, the direction of the current is expressed in the direction of the fold of the other radius.

Lenz's Law Trial

When a magnet is directed near a coil, then where is the direction of the electric current that will occur at the resistance R?

So because of that a magnet is directed toward a coil, then the coil will emerge an emf (electromotive force) induction which can cause induction currents in a coil, so as to cause a magnetic field that is contrary to the fixed magnetic field, then the direction of the current in the coil from B to A as stated in the lenz law.

So that's the discussion about Lenz's Legal Material. May be useful. Thank you for visiting our website. For those of you who want to learn other Physics Materials, we've provided below.

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