I have several basic questions here (stuff I don't understand).
1) current: Say you have some voltage source, eg. a capacitor (that seperates the charges who-knows how. Unfortunately I haven't been explained that. THAT would be good to know). If the voltage source is connected to a circuit, is there an electric field in the wire? In a real wire, does internal resistance start to negate the simplification where all the voltage is supposedly across resistors/capacitors/other devices?
2) What does the magnetic field come from? When I learn magnetism, I admit it starts to sound like circular logic: there is a magnetic force's effect on a particle-some equation-some contrived magnetic field-the field's effect on a particle. Hopefully the answer is not part of that.
1) current: Say you have some voltage source, eg. a capacitor (that seperates the charges who-knows how. Unfortunately I haven't been explained that. THAT would be good to know). If the voltage source is connected to a circuit, is there an electric field in the wire? In a real wire, does internal resistance start to negate the simplification where all the voltage is supposedly across resistors/capacitors/other devices?
2) What does the magnetic field come from? When I learn magnetism, I admit it starts to sound like circular logic: there is a magnetic force's effect on a particle-some equation-some contrived magnetic field-the field's effect on a particle. Hopefully the answer is not part of that.