/A loop a wire produces a current when moved in/out of a magnetic field.
A solenoid produces a magnetic field when a current moves through it.
If the solenoid has a magnetic core (ferrous) the strength of the
generated magnatic field increases./

If a solenoid has a magnetic core, does this alter the manner in which
current is generated in the solenoid by a magnet being moved in the
vicinity?

That is:
A) a solenoid with an air core has a magnet moved towards the top of it.
B) a solenoid with an iron core has a magnet moved towards the top of it.

Does the resulting Voltage/Current produced in A and B differ?

I am thinking that it doesn't, since only the magnatic field change
creates the current, and only the moved magnet is changing the magnet
field -- the field from the core is unchanging.

--
edA-qa mort-ora-y (Producer)
Trostlos Records http://trostlos.org/

"What suffering would man know if not for his own?"

"edA-qa mort-ora-y" a écrit dans le message de
...
/A loop a wire produces a current when moved in/out of a magnetic field.
A solenoid produces a magnetic field when a current moves through it.
If the solenoid has a magnetic core (ferrous) the strength of the
generated magnatic field increases./

If a solenoid has a magnetic core, does this alter the manner in which
current is generated in the solenoid by a magnet being moved in the
vicinity?

That is:
A) a solenoid with an air core has a magnet moved towards the top of it.
B) a solenoid with an iron core has a magnet moved towards the top of it.

Does the resulting Voltage/Current produced in A and B differ?

Yes.

I am thinking that it doesn't, since only the magnatic field change
creates the current, and only the moved magnet is changing the magnet
field -- the field from the core is unchanging.

No. The magnet influences the core that becomes magnetised, so the core
transforms itself into a magnet, creating its own magnetic field.

FG

edA-qa mort-ora-y (Producer)
Trostlos Records http://trostlos.org/

"What suffering would man know if not for his own?"

François Guillet wrote:
I am thinking that it doesn't, since only the magnatic field change
creates the current, and only the moved magnet is changing the magnet
field -- the field from the core is unchanging.

No. The magnet influences the core that becomes magnetised, so the core
transforms itself into a magnet, creating its own magnetic field.

Okay, but the core is already magnetized, it is a permanent magnet. The
magnet coming towards the solenoid with the core is also already magnetized.

Does the core magnetization change in this scenario? I was suspecting
that it basically stayed the same.

So here is a question, at which rate does the magnetization of a
ferro-magnetic material change in response to an external magnetic
field? Would the permanent magnet core have its field changed at all by
a relatively small magnet coming near it?


--
edA-qa mort-ora-y (Producer)
Trostlos Records http://trostlos.org/

"What suffering would man know if not for his own?"

edA-qa mort-ora-y wrote in message ...
/A loop a wire produces a current when moved in/out of a magnetic field.
A solenoid produces a magnetic field when a current moves through it.
If the solenoid has a magnetic core (ferrous) the strength of the
generated magnatic field increases./

If a solenoid has a magnetic core, does this alter the manner in which
current is generated in the solenoid by a magnet being moved in the
vicinity?

That is:
A) a solenoid with an air core has a magnet moved towards the top of it.
B) a solenoid with an iron core has a magnet moved towards the top of it.

Does the resulting Voltage/Current produced in A and B differ?

I am thinking that it doesn't, since only the magnatic field change
creates the current, and only the moved magnet is changing the magnet
field -- the field from the core is unchanging.


These are variations of flux B inside the solenoid that produce the
resulting voltage.

When approaching a magnet to a solenoid with a iron core, flux lines
all around the magnet will be different that in the case of the
absence of the core. They will "concentrate" in the solenoid,
producing a higher B, as a conqequence a higher variation of B and
therefore a higher voltage.

arthur wrote:
When approaching a magnet to a solenoid with a iron core, flux lines
all around the magnet will be different that in the case of the
absence of the core. They will "concentrate" in the solenoid,
producing a higher B, as a conqequence a higher variation of B and
therefore a higher voltage.

Yes, but does it produce a linearly higher voltage, or does the voltage
function completely change?

That is, is the voltage of the solenoid with a core a simple multiple of
the voltage without the core?

--
edA-qa mort-ora-y (Producer)
Trostlos Records http://trostlos.org/

"What suffering would man know if not for his own?"

edA-qa mort-ora-y wrote in message ...
arthur wrote:
When approaching a magnet to a solenoid with a iron core, flux lines
all around the magnet will be different that in the case of the
absence of the core. They will "concentrate" in the solenoid,
producing a higher B, as a conqequence a higher variation of B and
therefore a higher voltage.

Yes, but does it produce a linearly higher voltage, or does the voltage
function completely change?

That is, is the voltage of the solenoid with a core a simple multiple of
the voltage without the core?

There is no linear relation (eg Voltage is not proportionnel to the
permeability of the core).