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    Ok,ok. I now theoretically the Lenz's law. But i search all the studentroom and found many topics explain it BUT because i asm so stupid or so stressed i dont get it !
    I think we should answer a question together about it so i will get it



    No need to say the Lenz Law but about the rest please help me with it and explain m what should i do to find all that stuff
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    1)North pole

    2) To the right

    3) Due to the gravity the magent is falling faster so there is a greater rate of change of flux, greater emf and therefore a greater current.
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    (Original post by Sakujo)
    1)North pole

    2) To the right

    3) Due to the gravity the magent is falling faster so there is a greater rate of change of flux, greater emf and therefore a greater current.
    Thankx for ur quick answer but why North pole and why to the right ? The 3rd one is ok
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    (Original post by Neofytos)
    Thankx for ur quick answer but why North pole and why to the right ? The 3rd one is ok
    Should be able to the question if you understand lenz's law, the coil has to oppose. Anti-clockwise current is formed due to N-pole and therefore the current is going to the right.
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    (Original post by Sakujo)
    Should be able to the question if you understand lenz's law, the coil has to oppose. Anti-clockwise current is formed due to N-pole and therefore the current is going to the right.
    I even didnt understand what he means by : "State the induced magnetic polarity on the top side of the coil as the magnet falls towards it."
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    (Original post by Neofytos)
    I even didnt understand what he means by : "State the induced magnetic polarity on the top side of the coil as the magnet falls towards it."
    erm well what is Lenz's law? The direction of the induced current acts in the opposite direction to the motion producing it, right?
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    (Original post by Neofytos)
    I even didnt understand what he means by : "State the induced magnetic polarity on the top side of the coil as the magnet falls towards it."
    What magnetic pole is at the top of coil, the side close to the N pole of the magnet.
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    (Original post by n_251)
    erm well what is Lenz's law? The direction of the induced current acts in the opposite direction to the motion producing it, right?
    Oh,ok then. But then one is downwards and the other is leftwards :P
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    (Original post by Sakujo)
    What magnetic pole is at the top of coil, the side close to the N pole of the magnet.
    North u mean the N on the magnetic not North of coil (Head of coil) ? Its its like that ok i got it
    Was it so easy ? To say that the north side of magnetic will be induced
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    Im stuck on the 'add an arrow' question too. Could someone explain it?
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    OK GUYS. I got it ! It Needs to be North,because the Magnet is also North,so it will oppose it ! About second .... ?
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    Use the right hand grip rule to find the direction of current. The thumb points towards to the north.
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    (Original post by Neofytos)
    Oh,ok then. But then one is downwards and the other is leftwards :P
    Well, think about it. You have a coil right? The current can't mysteriously act in straight line and escape the coil. Therefore if the induced current acts upwards, the current must go in that direction and follow the coil from right to left.
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    (Original post by n_251)
    Well, think about it. You have a coil right? The current can't mysteriously act in straight line and escape the coil. Therefore if the induced current acts upwards, the current must go in that direction and follow the coil from right to left.
    Correct i thought it 1 second after i asked u
    Thanks guys u helped me a lot
 
 
 
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