Lenz Law | why magnet drops slowly through copper coil?

Like this guy dropping a magnet into a copper tube, we will refer that copper tube as copper coil, so that it will make sense in technical term...

 

If you drop a magnet usually it will drop quickly due to the gravity (9.81m/s*s)..  

 

But you can see clearly on that above gif . that magnet dropping very slowly....  

 

Even when magnet won't attract copper like it attract iron, what makes that magnet to drop slowly?

 

Lenz law exactly explains that....  

 

 If you know the concept of moving magnetic field creates electric current.... you can skip next para  

 

So when we move magnetic field across copper coil it creates electric current on that copper coil, we can even light a bulb using it.... (refer to the below gif to understand better) so we use this technique on alternator/generator to produce current(in power plants).... even if you have small dc motor in home you can make that "magnetic field movement to electric current experiment".. (if you already don't know that experiment, ask me I'll explain it)  

 

So this above experiment proves that moving a magnetic field across copper coil produce current  

 

But hey..... you know about another phenomenon?  

 

It is electric current on a copper coil can create magnetic field around it.. again if you know about this concept already feel free to ignore next para  

 

So when electric current passes through a copper coil, it creates magnetic field around it... A simple example for this is a temporary magnets... temporary magnets is itself a specific topic.. so lets try to explain it short. if you take a iron nail and wrap around a copper wire around it tightly (shown as below gif") and connect the either end of the wire to a battery.. boom magic happens.... I mean that iron nail now not turned into a focking magnet.. now you can attract small iron particles with it....  

 

So this above experiment proves that electric current on a copper coil can make magnetic field around it  

 

Hey baib.. do you started to see a loop here? like magnetic field creates electric current AND electric current creates a magnetic field... OMG!.. It seems like we stuck in a loop  

 

After these much of faltu explanation.. we come into the main explanation "why that magnet through that copper coil slowed while dropping?..."

 

because................... wait! 

 

before explaining it,  prepare your imagination power sharply and visualize it, i know you can do it  

 

When we drop magnet into the copper coil, we getting two scenarios 

       1. Magnet moving through copper 

       2. Copper getting magnetic field around it  

 

Lets talk about first scenario :- 

      As I said you before when magnet moving through copper it create current on copper... so now that copper having current 

 

 

Lets talk about second scenario :-

       As a result of 1st scenario that copper coil having current now, as i said before electric current in a copper coil can produce magnetic fields around it.. 

 

so it's time to use your imagination...

 

 like that magnet keep moving into the copper coil which induces/produces current in copper coil AND because of current in the copper coil, That coil  having magnetic field around it... so technically that copper coil became a magnet now. ya that magnet isn't powerful obviously... but at-least it can be a weak magnet....

 

since that copper coil became a magnet, we will call it magnetic coil to make you understand easily and when we drop magnet inside a magnetic coil, it both gonna attract each other.. because of that attraction happening, that magnet takes time to reach the ground.....  

 

IN SHORT: 

 

The force created between the copper coil and the magnet opposes the motion of the magnet and it slowed down to reach the ground....  

 

The god damn lenzzzzzzzzzzzz law explaining this phenomenon only.....  

 

 

Lenz law (WikiPedia):-

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

 

Congratulations for reading all shit ............................