Magnet pole question in generation

[Quix270]

What would happen if a coil it’s exposed to a moving magnetic field with only north poles? Coils being exposed to only North Pole. Will produce alternate current or nothing?

 

[phinds]

What would happen if a coil it’s exposed to a moving magnetic field with only north poles? Coils being exposed to only North Pole. Will produce alternate current or nothing?

What is a "magnetic field with only north poles" ? Sounds like a unicorn to me.

 

[Quix270]

What is a "magnetic field with only north poles" ? Sounds like a unicorn to me.

What would happen if a coil is exposed to North Pole of magnet who are in movement?

 

[phinds]

What would happen if a coil is exposed to North Pole of magnet who are in movement?

You did not answer my question. Again, what is a "magnetic field with only north poles" ? Sounds like a unicorn to me.

 

[Borek]

What would happen if a coil it’s exposed to a moving magnetic field with only north poles? Coils being exposed to only North Pole. Will produce alternate current or nothing?

Try to sketch what you mean and attach an image to your post. As @phinds signaled your statement now doesn't make physical sense so most likely there is some misunderstanding somewhere.

 

[berkeman]

What would happen if a coil is exposed to North Pole of magnet who are in movement?

Putting on my mind-reading hat for a moment, maybe the OP means what would happen if a number of bar magnets were joined together mechanically like a picket fence:

https://images-na.ssl-images-amazon.com/images/I/51wAPPFtMwL._SX425_.jpg

With all the "N" poles at the top. Then run the top of the fence left-to-right past a horizontal pickup coil to see what the induced voltage would be.

@Quix270 -- if this is what you mean, you will still get an AC pickup voltage induced in the coil, but it will be smaller than if the full "N" - "S" - "N" poles were run past the coil. The induced pickup voltage is proportional to the change in the flux through the coil area, so if you are just doing "N" - <zero> - "N" changes in the flux, that will be around half of what you can get if you change the flux all the way in each cycle N-S-N.

Look at the graph below and imagine it is the flux through the coil. Instead of going a full amplitude plus-to-minus, it is changing less because it is mostly one-sided. If it were the flux due to a full N-S-N changing flux, the amplitude of the change in the flux would be larger and evenly distributed above and below the zero line.

Does that help?

https://i.pinimg.com/originals/63/2e/6d/632e6ddab778fd995fc718b62b74b28c.png

 

[phinds]

Putting on my mind-reading hat for a moment

Ah, you optimist you