Teoretically and practically, Is there any different in using magnets as core compare to coil as core.
If I understand your question correctly, yes. A coil has to be in an active circuit to produce magnetism. A generator relies upon the movement of a magnet within a coil to produce current. Therefore an electromagnet won't work unless powered from the outside, which would be kind of silly.darkar said:Teoretically and practically, Is there any different in using magnets as core compare to coil as core.
bout the generator, can you tell me the difference between
moving the coil and moving the magnet. Theoretically, it will induce the
same emf, but practically, i remember that there is a difference.
we are using cows to pull a turbine. cuz they can work relatively longer and are strong, even though they are slow, but we can make up for that with stronger magnets and more coils... and then this turbine will be in a magnetic field of a pair of fixed magnets. therefore, electricity, we can assume that there will be a battery charger that will be sufficiently large.
Okay, I see. You're asking if it matters which part moves. Not in the sense of creating the electricity, but its far easier from a construction standpoint to move the magnets because they don't have to be electrically connected to anything. If you move the coil, you need slip rings, brushes, etc. to transfer the current from the coil to the rest of the circuit.darkar said:Sorry for i let u misunderstood the question.